As filed with the Securities and Exchange Commission on August 4, 2006
                                                      Registration No. 333-_____
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                   ----------
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                                   ----------
                                GERON CORPORATION
             (Exact Name of Registrant as Specified in Its Charter)
                                   ----------

        Delaware                                                75-2287752
(State or Other Jurisdiction of                               (I.R.S. Employer
 Incorporation or Organization)                             Identification No.)

                                   ----------
                             230 Constitution Drive
                          Menlo Park, California 94025
                                 (650) 473-7700

               (Address, Including Zip Code and Telephone Number,
        Including Area Code, of Registrant's Principal Executive Offices)
                                   ----------
                                Thomas B. Okarma
                      President and Chief Executive Officer
                                Geron Corporation
                             230 Constitution Drive
                          Menlo Park, California 94025
                                 (650) 473-7700
            (Name, Address, Including Zip Code and Telephone Number,
                   Including Area Code, of Agent for Service)
                                   ----------
                                   Copies to:
                             Alan C. Mendelson, Esq.
                              Latham & Watkins LLP
                                 140 Scott Drive
                          Menlo Park, California 94025
                                 (650) 328-4600
                                   ----------

      Approximate date of commencement of proposed sale to the public: From
time to time after the effective date of this Registration Statement.
                                   ----------

         If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. |_|

         If any of the securities being registered on this Form are to be
offered on a delayed or continuous basis pursuant to Rule 415 under the
Securities Act of 1933, other than securities offered only in connection with
dividend or interest reinvestment plans, check the following box. |X|

         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. |_|

         If this Form is a post-effective amendment filed pursuant to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act registration statement number of the earlier effective registration
statement for the same offering. |_|

         If this Form is a registration statement pursuant to General
Instruction I.D. or a post-effective amendment thereto that shall become
effective upon filing with the Commission pursuant to Rule 462(e) under the
Securities Act, check the following box. |_|

         If this Form is a post-effective amendment to a registration statement
filed pursuant to General Instruction I.D. filed to register additional
securities or additional classes of securities pursuant to Rule 413(b) under the
Securities Act, check the following box. |_|

                                   ----------


                                                       

                         CALCULATION OF REGISTRATION FEE
===================================================================================================================
                                                                     Proposed Maximum
                                                                    Aggregate Offering            Amount of
Title of Each Class of Securities to be Registered (1)                  Price (1)          Registration Fee (2)
-------------------------------------------------------------------------------------------------------------------
Debt securities, common stock, preferred stock and warrants to
purchase debt securities, common stock or preferred stock (3)               --                       --
Total.......................................................           $250,000,000                $26,750
===================================================================================================================


(1)  Not specified as to each class of  securities to be registered  pursuant to
     General Instruction II.D to Form S-3 under the Securities Act.
(2)  The  registration  fee has been  calculated in accordance  with Rule 457(o)
     under the Securities Act.
(3)  Includes  an  indeterminate  number  of  securities  that may be  issued in
     primary  offerings  or  upon  exercise,   conversion  or  exchange  of  any
     securities  registered  hereunder that provide for exercise,  conversion or
     exchange.

         The Registrant hereby amends this Registration Statement on such date
or dates as may be necessary to delay its effective date until the registrant
shall file a further amendment which specifically states that this Registration
Statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.




The information contained in this prospectus is not complete and may be changed.
We may not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and it is not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.

                   SUBJECT TO COMPLETION, DATED AUGUST 4, 2006

PROSPECTUS
                                  $250,000,000

                                GERON CORPORATION

                         Debt Securities, Common Stock,
                          Preferred Stock and Warrants

     We may from time to time sell any combination of debt securities, preferred
stock, common stock and warrants described in this prospectus in one or more
offerings. The aggregate initial offering price of all securities sold under
this prospectus will not exceed $250,000,000.

     This prospectus provides a general description of the securities we may
offer. Each time we sell securities, we will provide specific terms of the
securities offered in a supplement to this prospectus. The prospectus supplement
may also add, update or change information contained in this prospectus. You
should read this prospectus and the applicable prospectus supplement carefully
before you invest in any securities. This prospectus may not be used to
consummate a sale of securities unless accompanied by the applicable prospectus
supplement.

     We will sell these securities directly to our stockholders or to purchasers
or through agents on our behalf or through underwriters or dealers as designated
from time to time. If any agents or underwriters are involved in the sale of any
of these securities, the applicable prospectus supplement will provide the names
of the agents or underwriters and any applicable fees, commissions or discounts.

     Our common stock is traded on the Nasdaq National Market under the symbol
"GERN." On August 1, 2006, the closing price of our common stock was $5.96.

                             ----------------------

     Investing in our securities involves a high degree of risk. Risks
associated with an investment in our securities will be described in the
applicable prospectus supplement and certain of our filings with the Securities
and Exchange Commission, as described in "Risk Factors" on page 1.

                             ----------------------

     Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or passed upon the
accuracy or adequacy of the prospectus. Any representation to the contrary is a
criminal offense.

                             ----------------------

                 The date of this prospectus is August 4, 2006.







                                                                                                              
                                TABLE OF CONTENTS

                                                                                                               Page
                                                                                                               ----
ABOUT THIS PROSPECTUS.............................................................................................1

ABOUT GERON.......................................................................................................1

RISK FACTORS......................................................................................................1

FORWARD-LOOKING STATEMENTS........................................................................................1

RATIO OF EARNINGS TO FIXED CHARGES................................................................................2

USE OF PROCEEDS...................................................................................................2

PLAN OF DISTRIBUTION..............................................................................................2

DESCRIPTION OF DEBT SECURITIES....................................................................................4

DESCRIPTION OF COMMON STOCK......................................................................................12

DESCRIPTION OF PREFERRED STOCK...................................................................................13

DESCRIPTION OF WARRANTS..........................................................................................15

CERTAIN PROVISIONS OF DELAWARE LAW AND OF THE COMPANY'S CHARTER AND BYLAWS.......................................16

LEGAL MATTERS....................................................................................................17

EXPERTS .........................................................................................................17

LIMITATION ON LIABILITY AND DISCLOSURE OF COMMISSION POSITION ON INDEMNIFICATION FOR SECURITIES ACT LIABILITIES..17

WHERE YOU CAN FIND MORE INFORMATION..............................................................................18





                              ABOUT THIS PROSPECTUS

         This prospectus is a part of a registration statement that we filed
with the Securities and Exchange Commission utilizing a "shelf" registration
process. Under this shelf registration process, we may sell any combination of
the securities described in this prospectus in one or more offerings up to a
total dollar amount of $250,000,000. This prospectus provides you with a general
description of the securities we may offer. Each time we sell securities under
this shelf registration, we will provide a prospectus supplement that will
contain specific information about the terms of that offering. The prospectus
supplement may also add, update or change information contained in this
prospectus. You should read both this prospectus and any prospectus supplement
together with additional information described under the next heading "Where You
Can Find More Information."

         We have not authorized any dealer, salesman or other person to give any
information or to make any representation other than those contained or
incorporated by reference in this prospectus and the accompanying supplement to
this prospectus. You must not rely upon any information or representation not
contained or incorporated by reference in this prospectus or the accompanying
prospectus supplement. This prospectus and the accompanying supplement to this
prospectus do not constitute an offer to sell or the solicitation of an offer to
buy any securities other than the registered securities to which they relate,
nor do this prospectus and the accompanying supplement to this prospectus
constitute an offer to sell or the solicitation of an offer to buy securities in
any jurisdiction to any person to whom it is unlawful to make such offer or
solicitation in such jurisdiction. You should not assume that the information
contained in this prospectus and the accompanying prospectus supplement is
accurate on any date subsequent to the date set forth on the front of the
document or that any information we have incorporated by reference is correct on
any date subsequent to the date of the document incorporated by reference, even
though this prospectus and any accompanying prospectus supplement is delivered
or securities sold on a later date.

                                   ABOUT GERON

         Geron is a Menlo Park, Calif.-based biopharmaceutical company that is
developing and intends to commercialize first-in-class therapeutic products for
the treatment of cancer and degenerative diseases, including spinal cord injury,
heart failure, diabetes and HIV/AIDS. The products are based on Geron's core
expertise in telomerase and human embryonic stem cells.

         We were incorporated in 1990 under the laws of Delaware. Our principal
executive offices are located at 230 Constitution Drive, Menlo Park, California
94025 and our telephone number is (650) 473-7700.

                                  RISK FACTORS

         You should carefully consider the specific risks set forth under the
caption "Risk Factors" in the applicable prospectus supplement and under the
captions "Risk Factors" or "Additional Factors That May Affect Future Results"
in any of our filings with the Commission pursuant to Sections 13(a), 13(c), 14
or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), incorporated by reference herein, before making an investment decision.
For more information, see "Where You Can Find More Information."

                           FORWARD-LOOKING STATEMENTS

         This prospectus and the documents incorporated by reference into this
prospectus contain forward-looking statements that are based on current
expectations, estimates and projections about our industry, management's
beliefs, and assumptions made by management. Words such as "anticipates,"
"expects," "intends," "plans," "believes," "seeks," "estimates," and variations
of such words and similar expressions are intended to identify such
forward-looking statements. These statements are not guarantees of future
performance and are subject to certain risks, uncertainties and assumptions that
are difficult to predict; therefore, actual results may differ materially from
those expressed or forecasted in any forward-looking statements. The risks and
uncertainties include those noted in "Risk Factors" above and in the documents
incorporated by reference. We undertake no obligation to update publicly any
forward-looking statements, whether as a result of new information, future
events or otherwise.


                                       1


                       RATIO OF EARNINGS TO FIXED CHARGES

         Our earnings are inadequate to cover fixed charges. The following table
sets forth the dollar amount of the coverage deficiency. We have not included a
ratio of earnings to combined fixed charges and preferred stock dividends
because we do not have any preferred stock outstanding.


                         
                                                        Year Ended December 31,                      Six Months Ended
                                      -----------------------------------------------------------    ----------------
                                        2001         2002        2003        2004          2005        June 30, 2006
                                      ---------    --------    --------    ---------    ---------    ----------------
Ratio of earnings to fixed changes          N/A         N/A         N/A          N/A          N/A             N/A
Coverage deficiency (1)               $  41,142    $ 33,084    $ 29,051    $  79,665    $  33,108      $   18,181



-----------------------

(1) All amounts in thousands.

                                 USE OF PROCEEDS

         Unless otherwise provided in the applicable prospectus supplement, we
intend to use the net proceeds from the sale of the securities under this
prospectus for general corporate purposes, which may include funding research
and development, increasing our working capital, reducing indebtedness,
acquisitions or investments in businesses, products or technologies that are
complementary to our own, and capital expenditures. We will set forth in the
prospectus supplement our intended use for the net proceeds received from the
sale of any securities. Pending the application of the net proceeds, we intend
to invest the net proceeds in short-term, investment-grade, interest-bearing
securities.

                              PLAN OF DISTRIBUTION

         We may sell the securities from time to time pursuant to underwritten
public offerings, negotiated transactions, block trades or a combination of
these methods. We may sell the securities (1) through underwriters or dealers,
(2) through agents and/or (3) directly to one or more purchasers. We may
distribute the securities from time to time in one or more transactions:

     o    at a fixed price or prices, which may be changed;

     o    at market prices prevailing at the time of sale;

     o    at prices related to such prevailing market prices; or

     o    at negotiated prices.

         We may solicit directly offers to purchase the securities being offered
by this prospectus. We may also designate agents to solicit offers to purchase
the securities from time to time. We will name in a prospectus supplement any
agent involved in the offer or sale of our securities.

         If we utilize a dealer in the sale of the securities being offered by
this prospectus, we will sell the securities to the dealer, as principal. The
dealer may then resell the securities to the public at varying prices to be
determined by the dealer at the time of resale.

         If we utilize an underwriter in the sale of the securities being
offered by this prospectus, we will execute an underwriting agreement with the
underwriter at the time of sale and we will provide the name of any underwriter
in the prospectus supplement that the underwriter will use to make resales of
the securities to the public. In connection with the sale of the securities, we,
or the purchasers of securities for whom the underwriter may act as agent, may
compensate the underwriter in the form of underwriting discounts or commissions.
The underwriter may sell the securities to or through dealers, and the
underwriter may compensate those dealers in the form of discounts, concessions
or commissions.



                                       2


         We will provide in the applicable prospectus supplement any
compensation we pay to underwriters, dealers or agents in connection with the
offering of the securities, and any discounts, concessions or commissions
allowed by underwriters to participating dealers. Underwriters, dealers and
agents participating in the distribution of the securities may be deemed to be
underwriters within the meaning of the Securities Act of 1933, as amended, and
any discounts and commissions received by them and any profit realized by them
on resale of the securities may be deemed to be underwriting discounts and
commissions. We may enter into agreements to indemnify underwriters, dealers and
agents against civil liabilities, including liabilities under the Securities
Act, or to contribute to payments they may be required to make in respect
thereof.

         The securities may or may not be listed on a national securities
exchange. To facilitate the offering of securities, certain persons
participating in the offering may engage in transactions that stabilize,
maintain or otherwise affect the price of the securities. This may include
over-allotments or short sales of the securities, which involves the sale by
persons participating in the offering of more securities than we sold to them.
In these circumstances, these persons would cover such over-allotments or short
positions by making purchases in the open market or by exercising their
over-allotment option. In addition, these persons may stabilize or maintain the
price of the securities by bidding for or purchasing securities in the open
market or by imposing penalty bids, whereby selling concessions allowed to
dealers participating in the offering may be reclaimed if securities sold by
them are repurchased in connection with stabilization transactions. The effect
of these transactions may be to stabilize or maintain the market price of the
securities at a level above that which might otherwise prevail in the open
market. These transactions may be discontinued at any time.

         The underwriters, dealers and agents may engage in transactions with
us, or perform services for us, in the ordinary course of business.



                                       3


                         DESCRIPTION OF DEBT SECURITIES

      The debt securities covered by this prospectus will be our convertible
senior or subordinated debt securities issued under one or more separate senior
or subordinated indentures to be entered into between us and a trustee to be
identified in the applicable prospectus supplement. This prospectus, together
with its prospectus supplement, will describe all the material terms of a
particular series of debt securities.

      The following is a summary of the most important provisions and
definitions of the indentures. For additional information, you should look at
the applicable indenture that is filed as an exhibit to the registration
statement which includes the prospectus. The indentures are substantially
identical except for the subordination provisions described below under
"Subordinated Debt Securities." In this description of debt securities, the
words "we", "us" or "our" refer only to Geron and not to any of our
subsidiaries.

General

      Debt securities may be issued in separate series without limitation as to
aggregate principal amount. We may specify a maximum aggregate principal amount
for the debt securities of any series.

      We are not limited as to the amount of debt securities we may issue under
the indentures, though such amount shall be limited by the aggregate principal
amount of securities that we may sell under this prospectus. The prospectus
supplement will set forth:

     o    whether the debt securities will be senior or subordinated;

     o    the offering price;

     o    the title;

     o    any limit on the aggregate principal amount;

     o    the person who shall be  entitled to receive  interest,  if other than
          the record holder on the record date;

     o    the date the principal will be payable;

     o    the interest rate, if any, the date interest will accrue, the interest
          payment dates and the regular record dates;

     o    the place where payments may be made;

     o    any mandatory or optional redemption provisions;

     o    if applicable, the method for determining how the principal,  premium,
          if any, or interest  will be  calculated  by  reference to an index or
          formula;

     o    if other than U.S.  currency,  the currency or currency units in which
          principal, premium, if any, or interest will be payable and whether we
          or the holder may elect payment to be made in a different currency;

     o    the  portion  of the  principal  amount  that  will  be  payable  upon
          acceleration of stated  maturity,  if other than the entire  principal
          amount;

     o    if the  principal  amount  payable  at  stated  maturity  will  not be
          determinable as of any date prior to stated maturity, the amount which
          will be deemed to be the principal amount;

     o    any  defeasance  provisions if different  from those  described  below
          under "Satisfaction and Discharge; Defeasance";

     o    any conversion or exchange provisions;

     o    any obligation to redeem or purchase the debt securities pursuant to a
          sinking fund;

     o    whether the debt  securities  will be issuable in the form of a global
          security;



                                       4


     o    any subordination  provisions, if different from those described below
          under "Subordinated Debt Securities";

     o    any deletions of, or changes or additions to, the events of default or
          covenants; and

     o    any other specific terms of such debt securities.

Unless otherwise specified in the prospectus supplement:

     o    the debt securities will be registered debt securities; and

     o    registered debt securities  denominated in U.S. dollars will be issued
          in denominations of $1,000 or an integral multiple of $1,000.

      Debt securities may be sold at a substantial discount below their stated
principal amount, bearing no interest or interest at a rate which at the time of
issuance is below market rates.

Exchange and Transfer

      Debt securities may be transferred or exchanged at the office of the
security registrar or at the office of any transfer agent designated by us.

      We will not impose a service charge for any transfer or exchange, but we
may require holders to pay any tax or other governmental charges associated with
any transfer or exchange.

      In the event of any potential redemption of debt securities of any series,
we will not be required to:

     o    issue,  register the transfer  of, or exchange,  any debt  security of
          that series  during a period  beginning  at the opening of business 15
          days before the day of mailing of a notice of redemption and ending at
          the close of business on the day of the mailing; or

     o    register the transfer of or exchange any debt  security of that series
          selected for  redemption,  in whole or in part,  except the unredeemed
          portion being redeemed in part.

      We may initially appoint the trustee as the security registrar. Any
transfer agent, in addition to the security registrar, initially designated by
us will be named in the prospectus supplement. We may designate additional
transfer agents or change transfer agents or change the office of the transfer
agent. However, we will be required to maintain a transfer agent in each place
of payment for the debt securities of each series.

Global Securities

      The debt securities of any series may be represented, in whole or in part,
by one or more global securities. Each global security will:

     o    be registered  in the name of a depositary  that we will identify in a
          prospectus supplement;

     o    be deposited with the depositary or nominee or custodian; and

     o    bear any required legends.

      No global security may be exchanged in whole or in part for debt
securities registered in the name of any person other than the depositary or any
nominee unless:

     o    the  depositary  has  notified  us that it is  unwilling  or unable to
          continue  as  depositary  or  has  ceased  to be  qualified  to act as
          depositary;

     o    an event of default is continuing; or

     o    any other circumstances described in a prospectus supplement occurs.



                                       5


      As long as the depositary, or its nominee, is the registered owner of a
global security, the depositary or nominee will be considered the sole owner and
holder of the debt securities represented by the global security for all
purposes under the indenture. Except in the above limited circumstances, owners
of beneficial interests in a global security:

     o    will not be entitled to have the debt  securities  registered in their
          names;

     o    will  not be  entitled  to  physical  delivery  of  certificated  debt
          securities; and

     o    will not be  considered to be holders of those debt  securities  under
          the indentures.

      Payments on a global security will be made to the depositary or its
nominee as the holder of the global security. Some jurisdictions have laws that
require that certain purchasers of securities take physical delivery of such
securities in definitive form. These laws may impair the ability to transfer
beneficial interests in a global security.

      Institutions that have accounts with the depositary or its nominee are
referred to as "participants." Ownership of beneficial interests in a global
security will be limited to participants and to persons that may hold beneficial
interests through participants. The depositary will credit, on its book-entry
registration and transfer system, the respective principal amounts of debt
securities represented by the global security to the accounts of its
participants.

      Ownership of beneficial interests in a global security will be shown on
and effected through records maintained by the depositary, with respect to
participants' interests, or any participant, with respect to interests of
persons held by participants on their behalf.

      Payments, transfers and exchanges relating to beneficial interests in a
global security will be subject to policies and procedures of the depositary.

      The depositary policies and procedures may change from time to time.
Neither we nor the trustee will have any responsibility or liability for the
depositary's or any participant's records with respect to beneficial interests
in a global security.

Payment and Paying Agent

      The provisions of this paragraph will apply to the debt securities unless
otherwise indicated in the prospectus supplement. Payment of interest on a debt
security on any interest payment date will be made to the person in whose name
the debt security is registered at the close of business on the regular record
date. Payment on debt securities of a particular series will be payable at the
office of a paying agent or paying agents designated by us. However, at our
option, we may pay interest by mailing a check to the record holder. The
corporate trust office will be designated as our sole paying agent.

      We may also name any other paying agents in the prospectus supplement. We
may designate additional paying agents, change paying agents or change the
office of any paying agent. However, we will be required to maintain a paying
agent in each place of payment for the debt securities of a particular series.

      All moneys paid by us to a paying agent for payment on any debt security
which remain unclaimed at the end of two years after such payment was due will
be repaid to us. Thereafter, the holder may look only to us for such payment.

Consolidation, Merger and Sale of Assets

      We may not consolidate with or merge into any other person, in a
transaction in which we are not the surviving corporation, or convey, transfer
or lease our properties and assets substantially as an entirety to, any person,
unless:

     o    the  successor,  if  any,  is a U.S.  corporation,  limited  liability
          company, partnership, trust or other entity;

     o    the successor assumes our obligations on the debt securities and under
          the indenture;


                                       6


     o    immediately  after  giving  effect to the  transaction,  no default or
          event of default shall have occurred and be continuing; and

     o    certain other conditions are met.

Events of Default

      Unless we inform you otherwise in the prospectus supplement, the indenture
will define an event of default with respect to any series of debt securities as
one or more of the following events:

            (1) failure to pay principal of or any premium on any debt security
      of that series when due;

            (2) failure to pay any interest on any debt security of that series
      for 30 days when due;

            (3) failure to deposit any sinking fund payment when due;

            (4) failure to perform any other covenant in the indenture continued
      for 60 days after being given the notice required in the indenture;

            (5) our bankruptcy, insolvency or reorganization; and

            (6) any other event of default specified in the prospectus
      supplement.

      An event of default of one series of debt securities is not necessarily an
event of default for any other series of debt securities.

      If an event of default, other than an event of default described in clause
(5) above, shall occur and be continuing, either the trustee or the holders of
at least 25% in aggregate principal amount of the outstanding securities of that
series may declare the principal amount of the debt securities of that series to
be due and payable immediately.

      If an event of default described in clause (5) above shall occur, the
principal amount of all the debt securities of that series will automatically
become immediately due and payable. Any payment by us on the subordinated debt
securities following any such acceleration will be subject to the subordination
provisions described below under "Subordinated Debt Securities."

      After acceleration the holders of a majority in aggregate principal amount
of the outstanding securities of that series may, under certain circumstances,
rescind and annul such acceleration if all events of default, other than the
non-payment of accelerated principal, or other specified amount, have been cured
or waived.

      Other than the duty to act with the required care during an event of
default, the trustee will not be obligated to exercise any of its rights or
powers at the request of the holders unless the holders shall have offered to
the trustee reasonable indemnity. Generally, the holders of a majority in
aggregate principal amount of the outstanding debt securities of any series will
have the right to direct the time, method and place of conducting any proceeding
for any remedy available to the trustee or exercising any trust or power
conferred on the trustee.

      A holder will not have any right to institute any proceeding under the
indentures, or for the appointment of a receiver or a trustee, or for any other
remedy under the indentures, unless:

            (1) the holder has previously given to the trustee written notice of
      a continuing event of default with respect to the debt securities of that
      series;

            (2) the holders of at least 25% in aggregate principal amount of the
      outstanding debt securities of that series have made a written request and
      have offered reasonable indemnity to the trustee to institute the
      proceeding; and



                                       7


            (3) the trustee has failed to institute the proceeding and has not
      received direction inconsistent with the original request from the holders
      of a majority in aggregate principal amount of the outstanding debt
      securities of that series within 60 days after the original request.

      Holders may, however, sue to enforce the payment of principal, premium or
interest on any debt security on or after the due date or to enforce the right,
if any, to convert any debt security without following the procedures listed in
(1) through (3) above.

      We will furnish the trustee an annual statement by our officers as to
whether or not we are in default in the performance of the indenture and, if so,
specifying all known defaults.

Modification and Waiver

      We and the trustee may make modifications and amendments to the indentures
with the consent of the holders of a majority in aggregate principal amount of
the outstanding securities of each series affected by the modification or
amendment.

      However, neither we nor the trustee may make any modification or amendment
without the consent of the holder of each outstanding security of that series
affected by the modification or amendment if such modification or amendment
would:

     o    change the stated maturity of any debt security;

     o    reduce the principal of,  premium,  if any, on or interest on any debt
          security;

     o    reduce the  principal of an original  issue  discount  security or any
          other debt security payable on acceleration of maturity;

     o    reduce the rate of interest on any debt security;

     o    change the currency in which any debt security is payable;

     o    impair the right to enforce any payment  after the stated  maturity or
          redemption date;

     o    waive any default or event of default in payment of the  principal of,
          premium on or interest on any debt security;

     o    waive a redemption payment or modify any of the redemption  provisions
          of any debt security;

     o    adversely affect the right, if any, to convert any debt security; or

     o    change the  provisions  in the  indenture  that relate to modifying or
          amending the indenture.

Satisfaction and Discharge; Defeasance

      We may be discharged from our obligations on the debt securities of any
series that have matured or will mature or be redeemed within one year if we
deposit with the trustee enough cash to pay all the principal, interest and any
premium due on the stated maturity date or redemption date of the debt
securities.

      Each indenture contains a provision that permits us to elect:

     o    to be  discharged  from all of our  obligations,  subject  to  limited
          exceptions,  with  respect  to any  series  of  debt  securities  then
          outstanding; and/or

     o    to be released from our obligations under the following  covenants and
          from the  consequences of an event of default  resulting from a breach
          of these covenants:

            (1) the subordination provisions under the subordinated indenture;
and



                                       8


            (2) covenants as to payment of taxes and maintenance of corporate
existence.

      To make either of the above elections, we must deposit in trust with the
trustee enough money to pay in full the principal, interest and any premium on
the debt securities. This amount may be made in cash and/or U.S. government
obligations. As a condition to either of the above elections, we must deliver to
the trustee an opinion of counsel that the holders of the debt securities will
not recognize income, gain or loss for Federal income tax purposes as a result
of the action.

      If any of the above events occurs, the holders of the debt securities of
the series will not be entitled to the benefits of the indenture, except for the
rights of holders to receive payments on the debt securities, the registration
of transfer and exchange of the debt securities and replacement of lost, stolen
or mutilated debt securities.

Notices

      Notices to holders will be given by mail to the addresses of the holders
in the security register.

Governing Law

      The indentures and the debt securities will be governed by, and construed
under, the laws of the State of New York.

Regarding the Trustee

      The indenture limits the right of the trustee, should it become a creditor
of us, to obtain payment of claims or secure its claims.

      The trustee is permitted to engage in certain other transactions. However,
if the trustee acquires any conflicting interest, and there is a default under
the debt securities of any series for which they are trustee, the trustee must
eliminate the conflict or resign.

Subordinated Debt Securities

      Payment on the subordinated debt securities will, to the extent provided
in the indenture, be subordinated in right of payment to the prior payment in
full of all of our senior indebtedness. The subordinated debt securities also
are effectively subordinated to all debt and other liabilities, including trade
payables and lease obligations, if any, of our subsidiaries, if any.

      Upon any distribution of our assets upon any dissolution, winding up,
liquidation or reorganization, the payment of the principal of and interest on
the subordinated debt securities will be subordinated in right of payment to the
prior payment in full in cash or other payment satisfactory to the holders of
senior indebtedness of all senior indebtedness. In the event of any acceleration
of the subordinated debt securities because of an event of default, the holders
of any senior indebtedness would be entitled to payment in full in cash or other
payment satisfactory to such holders of all senior indebtedness obligations
before the holders of the subordinated debt securities are entitled to receive
any payment or distribution. The indenture requires us or the trustee to
promptly notify holders of designated senior indebtedness if payment of the
subordinated debt securities is accelerated because of an event of default.

      We may not make any payment on the subordinated debt securities, including
upon redemption at the option of the holder of any subordinated debt securities
or at our option, if:

     o    a default in the payment of the principal,  premium, if any, interest,
          rent or other obligations in respect of designated senior indebtedness
          occurs and is continuing beyond any applicable period of grace (called
          a "payment default"); or


                                       9


     o    a  default  other  than a payment  default  on any  designated  senior
          indebtedness   occurs  and  is  continuing  that  permits  holders  of
          designated  senior  indebtedness  to accelerate its maturity,  and the
          trustee receives a notice of such default (called a "payment  blockage
          notice")  from us or any other  person  permitted  to give such notice
          under the indenture (called a "non-payment default").

      We may resume payments and distributions on the subordinated debt
securities:

     o    in the case of a payment default,  upon the date on which such default
          is cured, waived or ceases to exist; and

     o    in the case of a non-payment default, the earlier of the date on which
          such  nonpayment  default is cured,  waived or ceases to exist and 179
          days after the date on which the payment  blockage  notice is received
          by the trustee,  if the maturity of the designated senior indebtedness
          has not been accelerated.

      No new period of payment blockage may be commenced pursuant to a payment
blockage notice unless 365 days have elapsed since the initial effectiveness of
the immediately prior payment blockage notice and all scheduled payments of
principal, any premium and interest, including any liquidated damages, on the
notes that have come due have been paid in full in cash. No non-payment default
that existed or was continuing on the date of delivery of any payment blockage
notice shall be the basis for any later payment blockage notice unless the
non-payment default is based upon facts or events arising after the date of
delivery of such payment blockage notice.

      If the trustee or any holder of the notes receives any payment or
distribution of our assets in contravention of the subordination provisions on
the subordinated debt securities before all senior indebtedness is paid in full
in cash, property or securities, including by way of set-off, or other payment
satisfactory to holders of senior indebtedness, then such payment or
distribution will be held in trust for the benefit of holders of senior
indebtedness or their representatives to the extent necessary to make payment in
full in cash or payment satisfactory to the holders of senior indebtedness of
all unpaid senior indebtedness.

      In the event of our bankruptcy, dissolution or reorganization, holders of
senior indebtedness may receive more, ratably, and holders of the subordinated
debt securities may receive less, ratably, than our other creditors (including
our trade creditors). This subordination will not prevent the occurrence of any
event of default under the indenture.

      As of June 30, 2006, we had no senior indebtedness outstanding. We are not
prohibited from incurring debt, including senior indebtedness, under the
indenture. We may from time to time incur additional debt, including senior
indebtedness.

      We are obligated to pay reasonable compensation to the trustee and to
indemnify the trustee against certain losses, liabilities or expenses incurred
by the trustee in connection with its duties relating to the subordinated debt
securities. The trustee's claims for these payments will generally be senior to
those of noteholders in respect of all funds collected or held by the trustee.

Certain Definitions

       "indebtedness" means:

            (1) all indebtedness, obligations and other liabilities for borrowed
      money, including overdrafts, foreign exchange contracts, currency exchange
      agreements, interest rate protection agreements, and any loans or advances
      from banks, or evidenced by bonds, debentures, notes or similar
      instruments, other than any account payable or other accrued current
      liability or obligation incurred in the ordinary course of business in
      connection with the obtaining of materials or services;

            (2) all reimbursement obligations and other liabilities with respect
      to letters of credit, bank guarantees or bankers' acceptances;

            (3) all obligations and liabilities in respect of leases required in
      conformity with generally accepted accounting principles to be accounted
      for as capitalized lease obligations on our balance sheet;


                                       10


            (4) all obligations and other liabilities under any lease or related
      document in connection with the lease of real property which provides that
      we are contractually obligated to purchase or cause a third party to
      purchase the leased property and thereby guarantee a minimum residual
      value of the leased property to the lessor and our obligations under the
      lease or related document to purchase or to cause a third party to
      purchase the leased property;

            (5) all obligations with respect to an interest rate or other swap,
      cap or collar agreement or other similar instrument or agreement or
      foreign currency hedge, exchange, purchase agreement or other similar
      instrument or agreement;

            (6) all direct or indirect guaranties or similar agreements in
      respect of, and our obligations or liabilities to purchase, acquire or
      otherwise assure a creditor against loss in respect of, indebtedness,
      obligations or liabilities of others of the type described in (1) through
      (5) above;

            (7) any indebtedness or other obligations described in (1) through
      (6) above secured by any mortgage, pledge, lien or other encumbrance
      existing on property which is owned or held by us; and

            (8) any and all refinancings, replacements, deferrals, renewals,
      extensions and refundings of, or amendments, modifications or supplements
      to, any indebtedness, obligation or liability of the kind described in
      clauses (1) through (7) above.

      "senior indebtedness" means the principal, premium, if any, interest,
including any interest accruing after bankruptcy, and rent or termination
payment on or other amounts due on our current or future indebtedness, whether
created, incurred, assumed, guaranteed or in effect guaranteed by us, including
any deferrals, renewals, extensions, refundings, amendments, modifications or
supplements to the above. However, senior indebtedness does not include:

     o    indebtedness  that  expressly  provides that it shall not be senior in
          right of payment to the  subordinated  debt  securities  or  expressly
          provides  that it is on the same  basis or junior to the  subordinated
          debt securities;

     o    our indebtedness to any of our majority-owned subsidiaries, and

     o    the subordinated debt securities.


                                       11


                           DESCRIPTION OF COMMON STOCK

         The following summary of the terms of our common stock does not purport
to be complete and is subject to and qualified in its entirety by reference to
our Charter and Bylaws, copies of which are on file with the Commission as
exhibits to registration statements previously filed by us. See "Where You Can
Find More Information."

         We have authority to issue 200,000,000 shares of common stock, $0.001
par value per share. As of August 1, 2006, we had 66,160,032 shares of common
stock outstanding.

         The holders of our common stock are entitled to one vote per share on
all matters to be voted upon by the stockholders. Subject to preferences that
may be applicable to any outstanding shares of our preferred stock, the holders
of common stock are entitled to receive ratably such dividends, if any, as may
be declared from time to time by our board of directors out of funds legally
available for that purpose. In the event of a liquidation, dissolution or
winding up of the Company, the holders of our common stock are entitled to share
ratably in all assets remaining after payment of liabilities, subject to
preferences applicable to shares of our preferred stock, if any, then
outstanding. The common stock has no preemptive or conversion rights or other
subscription rights. There are no redemption or sinking fund provisions
available to the common stock. All outstanding shares of our common stock are,
and the shares of common stock offered by this prospectus will be, fully paid
and nonassessable.

Transfer Agent and Registrar

         The transfer agent and registrar for the common stock is U.S. Stock
Transfer Corporation.

Share Purchase Rights Plan

         On July 20, 2001, our board of directors adopted a share purchase
rights plan and declared a dividend distribution of one right for each
outstanding share of common stock to stockholders of record as of July 31, 2001.
Each right entitles the holder to purchase one unit consisting of one
one-thousandth of a share of Series A Junior Participating Preferred Stock for
$100 per unit. Under certain circumstances, if a person or group acquires 15% or
more of our outstanding common stock, holders of the rights (other than the
person or group triggering their exercise) will be able to purchase, in exchange
for the $100 exercise price, shares of our common stock, par value $0.001 per
share, or of any company into which Geron is merged having a value of $200. The
rights expire on July 31, 2011 unless extended by our board of directors.

Classified Board of Directors

         The certificate of incorporation provides for the board of directors to
be divided into three classes of directors, with each class as nearly equal in
number as possible, serving staggered three-year terms. As a result,
approximately one-third of the board of directors will be elected each year. The
classified board provision will help to assure the continuity and stability of
the board of directors and the business strategies and policies of Geron as
determined by the board of directors. The classified board provision could have
the effect of discouraging a third party from making a tender offer or
attempting to obtain control of us. In addition, the classified board provision
could delay stockholders who do not agree with the policies of the board of
directors from removing a majority of the board of directors for two years.


                                       12


                         DESCRIPTION OF PREFERRED STOCK

         We have authority to issue 3,000,000 shares of preferred stock, $0.001
par value per share, 50,000 shares of which have been designated Series A Junior
Participating Preferred Stock, $0.001 par value per share, and reserved for
issuance under the share purchase rights plan adopted on July 20, 2001. As of
August 1, 2006, we had no shares of preferred stock outstanding.

General

         Under our Certificate of Incorporation, our board of directors is
authorized generally without stockholder approval to issue shares of preferred
stock from time to time, in one or more classes or series. Prior to the issuance
of shares of each series, the board of directors is required by the Delaware
General Corporation Law and our Certificate of Incorporation to adopt
resolutions and file a certificate of designation with the Secretary of State of
the State of Delaware. The certificate of designation fixes for each class or
series the designations, powers, preferences, rights, qualifications,
limitations and restrictions, including, but not limited to, the following:

     o    the number of shares constituting each class or series;

     o    voting rights;

     o    rights and terms of redemption (including sinking fund provisions);

     o    dividend rights and rates;

     o    dissolution;

     o    terms concerning the distribution of assets;

     o    conversion or exchange terms;

     o    redemption prices; and

     o    liquidation preferences.

         All shares of preferred stock offered hereby will, when issued, be
fully paid and nonassessable and will not have any preemptive or similar rights.
Our board of directors could authorize the issuance of shares of preferred stock
with terms and conditions which could have the effect of discouraging a takeover
or other transaction that might involve a premium price for holders of the
shares or which holders might believe to be in their best interests.

         We will set forth in a prospectus supplement relating to the class or
series of preferred stock being offered the following terms:

     o    the title and stated value of the preferred stock;

     o    the number of shares of the preferred  stock offered,  the liquidation
          preference per share and the offering price of the preferred stock;

     o    the dividend rate(s), period(s) and/or payment date(s) or method(s) of
          calculation applicable to the preferred stock;

     o    whether dividends are cumulative or non-cumulative and, if cumulative,
          the date from which dividends on the preferred stock will accumulate;

     o    the  procedures  for any  auction  and  remarketing,  if any,  for the
          preferred stock;

     o    the provisions for a sinking fund, if any, for the preferred stock;

     o    the provision for redemption, if applicable, of the preferred stock;

     o    any listing of the preferred stock on any securities exchange;

     o    the terms and  conditions,  if  applicable,  upon which the  preferred
          stock will be convertible into common stock,  including the conversion
          price (or manner of calculation) and conversion period;


                                       13


     o    voting rights, if any, of the preferred stock;

     o    whether  interests  in the  preferred  stock  will be  represented  by
          depositary shares;

     o    a discussion of any material  and/or  special  United  States  Federal
          income tax considerations applicable to the preferred stock;

     o    the relative  ranking and  preferences  of the  preferred  stock as to
          dividend  rights  and  rights  upon the  liquidation,  dissolution  or
          winding up of our affairs;

     o    any  limitations on issuance of any class or series of preferred stock
          ranking senior to or on a parity with the class or series of preferred
          stock as to dividend rights and rights upon  liquidation,  dissolution
          or winding up of our affairs; and

     o    any  other  specific  terms,  preferences,   rights,   limitations  or
          restrictions of the preferred stock.

Rank

         Unless we specify otherwise in the applicable prospectus supplement,
the preferred stock will rank, with respect to dividends and upon our
liquidation, dissolution or winding up:

     o    senior to all classes or series of our common  stock and to all of our
          equity securities ranking junior to the preferred stock;

     o    on a  parity  with all of our  equity  securities  the  terms of which
          specifically  provide that the equity securities rank on a parity with
          the preferred stock; and

     o    junior to all of our equity securities the terms of which specifically
          provide that the equity securities rank senior to the preferred stock.

The term "equity securities" does not include convertible debt securities.

Transfer Agent and Registrar

         The transfer agent and registrar for any series or class of preferred
stock will be set forth in the applicable prospectus supplement.


                                       14


                             DESCRIPTION OF WARRANTS

         We may issue warrants for the purchase of debt securities, common stock
or preferred stock. We may issue warrants independently or together with any
other securities offered by any prospectus supplement and may be attached to or
separate from the other offered securities. Each series of warrants will be
issued under a separate warrant agreement to be entered into by us with a
warrant agent The warrant agent will act solely as our agent in connection with
the series of warrants and will not assume any obligation or relationship of
agency or trust for or with any holders or beneficial owners of the warrants.
Further terms of the warrants and the applicable warrant agreements will be set
forth in the applicable prospectus supplement.

         The applicable prospectus supplement will describe the terms of the
warrants in respect of which this prospectus is being delivered, including,
where applicable, the following:

     o    the title of the warrants;

     o    the aggregate number of the warrants;

     o    the price or prices at which the warrants will be issued;

     o    the  designation,  terms and  number  of  shares  of debt  securities,
          preferred  stock or common  stock  purchasable  upon  exercise  of the
          warrants;

     o    the  designation  and terms of the offered  securities,  if any,  with
          which the warrants  are issued and the number of the  warrants  issued
          with each offered security;

     o    the date, if any, on and after which the warrants and the related debt
          securities,  preferred  stock  or  common  stock  will  be  separately
          transferable;

     o    the price at which each share of debt  securities,  preferred stock or
          common  stock  purchasable  upon  exercise  of  the  warrants  may  be
          purchased;

     o    the date on which the right to exercise  the warrants  shall  commence
          and the date on which that right shall expire;

     o    the minimum or maximum  amount of the warrants  which may be exercised
          at any one time;

     o    information with respect to book-entry procedures, if any;

     o    a discussion of certain federal income tax considerations; and

     o    any other  terms of the  warrants,  including  terms,  procedures  and
          limitations relating to the exchange and exercise of the warrants.


                                       15


                    CERTAIN PROVISIONS OF DELAWARE LAW AND OF
                        THE COMPANY'S CHARTER AND BYLAWS

         The following paragraphs summarize certain provisions of the Delaware
General Corporation Law, or DGCL, and the Company's Charter and Bylaws. The
summary does not purport to be complete and is subject to and qualified in its
entirety by reference to the DGCL and to the Company's Charter and Bylaws,
copies of which are on file with the Commission as exhibits to registration
statements previously filed by the Company. See "Where You Can Find More
Information."

         Our Certificate of Incorporation and Bylaws contain provisions that,
together with the ownership position of the officers, directors and their
affiliates, could discourage potential takeover attempts and make it more
difficult for stockholders to change management, which could adversely affect
the market place of our common stock.

         Our Certificate of Incorporation limits the personal liability of our
directors to Geron and our stockholders to the fullest extent permitted by the
DGCL. The inclusion of this provision in our Certificate of Incorporation may
reduce the likelihood of derivative litigation against directors and may
discourage or deter stockholders or management from bringing a lawsuit against
directors for breach of their duty of care.

         Our Bylaws provide that special meetings of stockholders can be called
only by the board of directors, the Chairman of the board of directors or the
Chief Executive Officer. Stockholders are not permitted to call a special
meeting and cannot require the board of directors to call a special meeting. Any
vacancy on the board of directors resulting from death, resignation, removal or
otherwise or newly created directorships may be filled only by vote of the
majority of directors then in office, or by a sole remaining director. Our
Bylaws also provide for a classified board. See "Description of Common Stock."

         We are subject to the "business combination" statute of the DGCL, an
anti-takeover law enacted in 1988. In general, Section 203 of the DGCL prohibits
a publicly-held Delaware corporation from engaging in a "business combination"
with an "interested stockholder," for a period of three years after the date of
the transaction in which a person became an "interested stockholder," unless:

     o    prior to such date the board of directors of the corporation  approved
          either the "business combination" or the transaction which resulted in
          the stockholder becoming an "interested stockholder;"

     o    upon consummation of the transaction which resulted in the stockholder
          becoming an "interested  stockholder,"  the  "interested  stockholder"
          owned at least 85% of the voting stock of the corporation  outstanding
          at the time the  transaction  commenced,  excluding  for  purposes  of
          determining the number of shares outstanding those shares owned (1) by
          persons who are  directors  and also  officers and (2) employee  stock
          plans  in  which  employee  participants  do not  have  the  right  to
          determine  confidentially whether shares held subject to the plan will
          be tendered in a tender or exchange offer; or

     o    on or subsequent to such date the "business  combination"  is approved
          by the board of  directors  and  authorized  at an  annual or  special
          meeting of stockholders by the affirmative  vote of a least 66% of the
          outstanding  voting  stock  which  is not  owned  by  the  "interested
          stockholder."

         A "business combination" includes mergers, stock or asset sales and
other transactions resulting in a financial benefit to the "interested
stockholders." An "interested stockholder" is a person who, together with
affiliates and associates, owns (or within three years, did own) 15% or more of
the corporation's voting stock. Although Section 203 permits us to elect not to
be governed by its provisions, we have not made this election. As a result of
the application of Section 203, potential acquirers of Geron may be discouraged
from attempting to effect an acquisition transaction with us, thereby possibly
depriving holders of our securities of certain opportunities to sell or
otherwise dispose of such securities at above-market prices pursuant to such
transactions.


                                       16





                                  LEGAL MATTERS

         Latham & Watkins LLP, Menlo Park, California, will issue an opinion
about certain legal matters with respect to the securities.

                                     EXPERTS

         The consolidated financial statements of Geron Corporation incorporated
by reference in Geron's Annual Report (Form 10-K/A) for the year ended December
31, 2005 (including schedules appearing therein) and Geron's management's
assessment of the effectiveness of internal control over financial reporting as
of December 31, 2005 incorporated by reference therein, have been audited by
Ernst & Young LLP, independent registered public accounting firm, as set forth
in their reports thereon, incorporated by reference therein, and incorporated
herein by reference. Such consolidated financial statements and management's
assessment are incorporated herein by reference in reliance upon such reports
given on the authority of such firm as experts in accounting and auditing.

        LIMITATION ON LIABILITY AND DISCLOSURE OF COMMISSION POSITION ON
                 INDEMNIFICATION FOR SECURITIES ACT LIABILITIES

         Our Bylaws provide for indemnification of our directors and officers to
the fullest extent permitted by law. Insofar as indemnification for liabilities
under the Securities Act may be permitted to directors, officers or controlling
persons of the Company pursuant to the Company's Certificate of Incorporation,
as amended, Bylaws and the DGCL, the Company has been informed that in the
opinion of the Commission such indemnification is against public policy as
expressed in the Securities Act and is therefore unenforceable.

                                       17


                       WHERE YOU CAN FIND MORE INFORMATION

         We file annual, quarterly and special reports, proxy statements and
other information with the Commission. You may read and copy any document we
file at the Commission's public reference room located at 100 F Street, N.E.,
Washington, D.C. 20549. Please call the Commission at 1-800-SEC-0330 for further
information on the operation of the public reference room. Our public filings
are also available to the public at the Commission's web site at
http://www.sec.gov. You may also inspect copies of these materials and other
information about us at the offices of the Nasdaq Stock Market, Inc., National
Market System, 1735 K Street, N.W., Washington, D.C. 20006-1500.

         The Commission allows us to "incorporate by reference" the information
we file with them which means that we can disclose important information to you
by referring you to those documents instead of having to repeat the information
in this prospectus. The information incorporated by reference is considered to
be part of this prospectus, and later information that we file with the
Commission will automatically update and supersede this information. We
incorporate by reference the documents listed below and any future filings made
with the Commission under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act
between the date of this prospectus and the termination of the offering:

     o    Our annual report on Form 10-K/A for the fiscal year ended
          December 31, 2005;

     o    Our current report on Form 8-K filed on January 11, 2006;

     o    Our  quarterly  reports on Form 10-Q for the three  months ended
          March 31, 2006 and six months ended June 30, 2006

     o    The  description  of our  common  stock set forth in our  registration
          statement  on Form 8-A,  filed with the  Commission  on June 13,  1996
          (File No. 0-20859).

         This prospectus is part of a registration statement on Form S-3 we have
filed with the Commission under the Securities Act. This prospectus does not
contain all of the information in the registration statement. We have omitted
certain parts of the registration statement, as permitted by the rules and
regulations of the Commission. You may inspect and copy the registration
statement, including exhibits, at the Commission's public reference room or
internet site. Our statements in this prospectus about the contents of any
contract or other document are not necessarily complete. You should refer to the
copy of each contract or other document we have filed as an exhibit to the
registration statement for complete information.

         We will furnish without charge to you, on written or oral request, a
copy of any or all of the documents incorporated by reference, including
exhibits to these documents. You should direct any requests for documents to
David L. Greenwood, Chief Financial Officer, Geron Corporation, 230 Constitution
Drive, Menlo Park, California 94025, telephone: (650) 473-7700.


                                       18


================================================================================



                                  $250,000,000

                                GERON CORPORATION

                         Debt Securities, Common Stock,
                          Preferred Stock and Warrants

                                   PROSPECTUS





                                 AUGUST 4, 2006



You should rely only on the information contained or incorporated by reference
in this prospectus. We have not authorized anyone to provide you with different
information. You should not assume that the information contained or
incorporated by reference in this prospectus is accurate as of any date other
than the date of this prospectus. We are not making an offer of these securities
in any state where the offer is not permitted.


================================================================================


                                     PART II

                   INFORMATION NOT REQUIRED IN THE PROSPECTUS

Item 14.   Other Expenses of Issuance and Distribution.

         The expenses to be paid by us in connection with the distribution of
the securities being registered are as set forth in the following table. All
amounts shown are estimates except for the Securities and Exchange Commission
registration fee.

     Securities and Exchange Commission Registration Fee              $26,750
     Legal Fees and Expenses                                         $100,000
     Accounting Fees and Expenses                                    $100,000
     Printing Expenses                                               $100,000
     Blue Sky Fees                                                     $5,000
     Transfer Agent Fees and Expenses                                  $5,000
     Trustee Fees and Expenses                                        $10,000
     Miscellaneous                                                   $153,250
                                                              ---------------
         Total                                                       $500,000
                                                              ===============

Item 15.   Indemnification of Directors and Officers.

         Section 145 of the DGCL allows for the indemnification of officers,
directors, and other corporate agents in terms sufficiently broad to indemnify
these persons for liabilities (including reimbursement for expenses incurred)
arising under the Securities Act. The registrant's certificate of incorporation
and bylaws provide for indemnification of the registrant's directors, officers,
employees and other agents to the extent and under the circumstances permitted
by the DGCL. The registrant has also entered into agreements with its directors
and officers that will require the registrant, among other things, to indemnify
them against liabilities that may arise by reason of their status or service as
directors to the fullest extent not prohibited by law. In addition, the
registrant carries director and officer liability insurance.



                                       II-1


Item 16.   Exhibits

      1.1(1)    Form of Underwriting Agreement.
      3.1(2)    Amended and Restated Certificate of Incorporation of
                Registrant.
      3.2(3)    Certificate of Amendment of Restated Certificate of
                Incorporation of Geron Corporation.
      3.3(6)    Certificate of Amendment of Restated Certificate of
                Incorporation of Geron Corporation.
      3.4(3)    Bylaws of Registrant.
      4.1(4)    Specimen Common Stock Certificate.
      4.2(1)    Specimen Preferred Stock Certificate.
      4.3(5)    Rights Agreement, dated as of July 20, 2001, by and
                between Geron Corporation and U.S. Stock Transfer
                Corporation, as Rights Agent, which includes the form of
                Certification of Designations of the Series A Junior
                Participating Preferred Stock of Geron Corporation as
                Exhibit A, the form of Right Certificate as Exhibit B and
                the Summary of Rights to Purchase Preferred Shares as
                Exhibit C.
      4.4(1)    Form of Debt Security.
      4.5       Form of Senior Indenture, between Geron Corporation and one or
                more trustees to be named.
      4.6       Form of Subordinated Indenture, between Geron Corporation and
                one or more trustees to be named.
      4.7(1)    Form of Warrant.
      4.8(1)    Form of Warrant Agreement.
      5.1       Opinion of Latham & Watkins LLP.
     12.1       Statement regarding computation of ratios.
     23.1       Consent of Ernst & Young LLP, Independent Registered Public
                Accounting Firm.
     23.2       Consent of Latham & Watkins LLP (included in Exhibit 5.1).
     24.1       Power of Attorney (included on the signature page hereto).
     25.1(1)    Statement of Eligibility of Trustee on Form T-1.

-------------

     (1)  To be filed by  amendment  or by a report  filed under the  Securities
          Exchange  Act  of  1934,  as  amended,   and  incorporated  herein  by
          reference.

     (2)  Incorporated by reference to identically  numbered exhibits filed with
          the Registrant's  Registration Statement on Form S-1 filed on June 12,
          1996.

     (3)  Incorporated  by reference to Exhibit 3.1 filed with the  Registrant's
          Annual Report on Form 10-K filed on March 3, 2003.

     (4)  Incorporated by reference to Exhibit 4.1 to Registration  Statement on
          Form S-1 filed on June 12, 1996.

     (5)  Incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K
          filed on July 23, 2001.

     (6)  Incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly
          Report on Form 10-Q filed on July 31, 2006.

Item 17.   Undertakings

(a) The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement:

                  (i) To include any prospectus required by Section 10(a)(3) of
         the Securities Act of 1933;

                  (ii) To reflect in the prospectus any facts or events arising
         after the effective date of the registration statement (or the most
         recent post-effective amendment thereof) which, individually or in the
         aggregate, represent a fundamental change in the information set forth
         in this registration statement. Notwithstanding the foregoing, any
         increase or decrease in volume of securities offered (if the total
         dollar value of securities offered would not exceed that which was
         registered) and any deviation from the low or high and of the estimated
         maximum offering range may be reflected in the form of prospectus filed
         with the Commission pursuant to Rule 424(b) if, in the aggregate, the
         changes in volume and price represent no more than 20 percent change in
         the maximum aggregate offering price set forth in the "Calculation of
         Registration Fee" table in the effective registration statement; and


                                      II-2


                  (iii) To include any material information with respect to the
         plan of distribution not previously disclosed in this registration
         statement or any material change to such information in this
         registration statement;

                  Provided, however, that subparagraphs (i) and (ii) do not
         apply if the information required to be included in a post-effective
         amendment by those paragraphs is contained in the periodic reports
         filed with or furnished to the Commission by the Registrant pursuant to
         Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that
         are incorporated by reference in this registration statement or are
         contained in a form of prospectus filed pursuant to Rule 424(b) that is
         part of this registration statement.

         (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

         (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         (4) That, for the purpose of determining liability under the Securities
Act of 1933 to any purchaser:

                  (A) Each prospectus filed by the registrant pursuant to Rule
         424(b)(3) shall be deemed to be part of the registration statement as
         of the date the filed prospectus was deemed part of and included in the
         registration statement; and

                  (B) Each prospectus required to be filed pursuant to Rule
         424(b)(2), (b)(5), or (b)(7) as part of a registration statement in
         reliance on Rule 430B relating to an offering made pursuant to Rule
         415(a)(1)(i), (vii), or (x) for the purpose of providing the
         information required by section 10(a) of the Securities Act of 1933
         shall be deemed to be part of and included in the registration
         statement as of the earlier of the date such form of prospectus is
         first used after effectiveness or the date of the first contract of
         sale of securities in the offering described in the prospectus. As
         provided in Rule 430B, for liability purposes of the issuer and any
         person that is at that date an underwriter, such date shall be deemed
         to be a new effective date of the registration statement relating to
         the securities in the registration statement to which that prospectus
         relates, and the offering of such securities at that time shall be
         deemed to be the initial bona fide offering thereof. Provided, however,
         that no statement made in a registration statement or prospectus that
         is part of the registration statement or made in a document
         incorporated or deemed incorporated by reference into the registration
         statement or prospectus that is a part of the registration statement
         will, as to a purchaser with a time of contract sale prior to such
         effective date, supersede or modify any statement that was made in the
         registration statement or prospectus that was a part of the
         registration statement or made in any such document immediately prior
         to such effective date.

         (5) That, or the purpose of determining liability of the registrant
under the Securities Act of 1933 to any purchaser in the initial distribution of
the securities the undersigned registrant undertakes that in a primary offering
of securities of the undersigned registrant pursuant to this registration
statement, regardless of the underwriting method used to sell the securities to
the purchaser, if the securities are offered or sold to such purchaser by means
of any of the following communications, the undersigned registrant will be a
seller to the purchaser and will be considered to offer or sell such securities
to such purchaser:

                  (A) Any preliminary prospectus or prospectus of the
         undersigned registrant relating to the offering required to be filed
         pursuant to Rule 424(b);

                  (B) Any free writing prospectus relating to the offering
         prepared by or on behalf of the undersigned registrant or used or
         referred to by the undersigned registrant;

                  (C) The portion of any other free writing prospectus relating
         to the offering containing material information about the undersigned
         registrant or its securities provided by or on behalf of the
         undersigned registrant; and

                  (D) Any other communication that is an offer in the offering
         made by the undersigned registrant to the purchaser.

                                      II-3


(b) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

(c) The undersigned registrant hereby undertakes to deliver or cause to be
delivered with the prospectus, to each person to whom the prospectus is sent or
given, the latest annual report, to security holders that is incorporated by
reference in the prospectus and furnished pursuant to and meeting the
requirements of Rule 14a-3 or Rule 14c-3 under the Securities Exchange Act of
1934; and, where interim financial information required to be presented by
Article 3 of Regulation S-X is not set forth in the prospectus, to deliver, or
cause to be delivered to each person to whom the prospectus is sent or given,
the latest quarterly report that is specifically incorporated by reference in
the prospectus to provide such interim financial information.

(d) Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred
or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

(e) The undersigned Registrant hereby further undertakes that:

         (1) For purposes of determining any liability under the Securities Act
of 1933, the information omitted from the form of prospectus filed as part of
this registration statement in reliance under Rule 430A and contained in a form
of prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4), or
497(h) under the Securities Act of 1933 shall be deemed to be part of this
registration statement as of the time it was declared effective.

         (2) For the purpose of determining any liability under the Securities
Act of 1933, each post-effective amendment that contains a form of prospectus
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.

(f) If and when applicable, the undersigned Registrant, hereby further
undertakes to file an application for the purpose of determining the eligibility
of the Trustee to act under subsection (a) of Section 310 of the Trust Indenture
Act in accordance with the rules and regulations prescribed by the Commission
under Section 305(b)(2) of the Act.


                                      II-4


                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in Menlo Park, State of California, on August 4, 2006.

                                        GERON CORPORATION
                                        By:     /s/ David L. Greenwood
                                                --------------------------------
                                                David L. Greenwood
                                                Executive Vice President and
                                                Chief Financial Officer


                                POWER OF ATTORNEY

         KNOW ALL BY THESE PERSONS PRESENT, that the persons whose signatures
appear below do hereby constitute and appoint Thomas B. Okarma and David L.
Greenwood, or any of them, with full power of substitution and full power to act
without the other, his or her true and lawful attorney-in-fact and agent to act
for him or her in his or her name, place and stead, in any and all capacities,
to sign a registration statement on Form S-3 and any or all amendments thereto
(including without limitation any post-effective amendments thereto), and any
registration statement for the same offering that is to be effective under Rule
462(b) of the Securities Act, and to file each of the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities and
Exchange Commission, granting unto said attorneys-in-fact and agents, and each
of them, full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises in order to
effectuate the same as fully, to all intents and purposes, as they, he or she
might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents, or any of them, may lawfully do or cause to be
done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.


                                                                                                       

Signature                                   Title                                                       Date
---------                                   -----                                                       ----

   /s/ Thomas B. Okarma                     Chief Executive Officer, President and Director        August 4, 2006
----------------------------------------    (principal executive officer)
             Thomas B. Okarma

                                            Executive Vice President and Chief Financial
   /s/ David L. Greenwood                   Officer (principal financial and accounting            August 4, 2006
----------------------------------------    officer)
            David L. Greenwood

   /s/ Alexander E. Barkas                  Director                                               August 4, 2006
----------------------------------------
           Alexander E. Barkas

   /s/ Edward V. Fritzky                    Director                                               August 4, 2006
----------------------------------------
            Edward V. Fritzky

   /s/ Charles J. Homcy                     Director                                               August 4, 2006
----------------------------------------
             Charles J. Homcy

   /s/ Thomas D. Kiley                      Director                                               August 4, 2006
----------------------------------------
             Thomas D. Kiley

   /s/ John P. Walker                       Director                                               August 4, 2006
----------------------------------------
              John P. Walker

   /s/ Patrick J. Zenner                    Director                                               August 4, 2006
----------------------------------------
            Patrick J. Zenner



                                      II-5


                                  EXHIBIT INDEX

      1.1(1)    Form of Underwriting Agreement.
      3.1(2)    Amended and Restated Certificate of Incorporation of
                Registrant.
      3.2(3)    Certificate of Amendment of Restated Certificate of
                Incorporation of Geron Corporation.
      3.3(6)    Certificate of Amendment of Restated Certificate of
                Incorporation of Geron Corporation.
      3.4(3)    Bylaws of Registrant.
      4.1(4)    Specimen Common Stock Certificate.
      4.2(1)    Specimen Preferred Stock Certificate.
      4.3(5)    Rights Agreement, dated as of July 20, 2001, by and
                between Geron Corporation and U.S. Stock Transfer
                Corporation, as Rights Agent, which includes the form of
                Certification of Designations of the Series A Junior
                Participating Preferred Stock of Geron Corporation as
                Exhibit A, the form of Right Certificate as Exhibit B and
                the Summary of Rights to Purchase Preferred Shares as
                Exhibit C.
      4.4(1)    Form of Debt Security.
      4.5       Form of Senior Indenture, between Geron Corporation and one or
                more trustees to be named.
      4.6       Form of Subordinated Indenture, between Geron Corporation and
                one or more trustees to be named.
      4.7(1)    Form of Warrant.
      4.8(1)    Form of Warrant Agreement.
      5.1       Opinion of Latham & Watkins LLP.
     12.1       Statement regarding computation of ratios.
     23.1       Consent of Ernst & Young LLP, Independent Registered Public
                Accounting Firm.
     23.2       Consent of Latham & Watkins LLP (included in Exhibit 5.1).
     24.1       Power of Attorney (included on the signature page hereto).
     25.1(1)    Statement of Eligibility of Trustee on Form T-1.

-------------

     (1)  To be filed by  amendment  or by a report  filed under the  Securities
          Exchange  Act  of  1934,  as  amended,   and  incorporated  herein  by
          reference.

     (2)  Incorporated by reference to identically  numbered exhibits filed with
          the Registrant's  Registration Statement on Form S-1 filed on June 12,
          1996.

     (3)  Incorporated  by reference to Exhibit 3.1 filed with the  Registrant's
          Annual Report on Form 10-K filed on March 3, 2003.

     (4)  Incorporated by reference to Exhibit 4.1 to Registration  Statement on
          Form S-1 filed on June 12, 1996.

     (5)  Incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K
          filed on July 23, 2001.

     (6)  Incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly
          Report on Form 10-Q filed on July 31, 2006.




                                                                     EXHIBIT 4.5

                  FORM OF INDENTURE TO BE ENTERED INTO BETWEEN
                      THE COMPANY AND A TRUSTEE TO BE NAMED




                                GERON CORPORATION


                              --------------------


                                    INDENTURE


                           Dated as of _________, 200_




                                [Name of Trustee]


                                     Trustee



                                TABLE OF CONTENTS


                                                                                                           
                                                                                                               Page
                                                                                                               ----

ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE.............................................................2
         Section 1.1.      Definitions............................................................................2
         Section 1.2.      Other Definitions......................................................................6
         Section 1.3.      Incorporation by Reference of Trust Indenture Act......................................6
         Section 1.4.      Rules of Construction..................................................................7
ARTICLE II. THE SECURITIES .......................................................................................7
         Section 2.1.      Issuable in Series.....................................................................7
         Section 2.2.      Establishment of Terms of Series of Securities.........................................7
         Section 2.3.      Execution and Authentication..........................................................10
         Section 2.4.      Registrar and Paying Agent............................................................11
         Section 2.5.      Paying Agent to Hold Money in Trust...................................................11
         Section 2.6.      Securityholder Lists..................................................................12
         Section 2.7.      Transfer and Exchange.................................................................12
         Section 2.8.      Mutilated, Destroyed, Lost and Stolen Securities......................................12
         Section 2.9.      Outstanding Securities................................................................13
         Section 2.10.     Treasury Securities...................................................................14
         Section 2.11.     Temporary Securities..................................................................14
         Section 2.12.     Cancellation..........................................................................14
         Section 2.13.     Defaulted Interest....................................................................14
         Section 2.14.     Global Securities.....................................................................14
         Section 2.15.     CUSIP Numbers.........................................................................16
ARTICLE III. REDEMPTION .........................................................................................16
         Section 3.1.      Notice to Trustee.....................................................................16
         Section 3.2.      Selection of Securities to be Redeemed................................................16
         Section 3.3.      Notice of Redemption..................................................................16
         Section 3.4.      Effect of Notice of Redemption........................................................17
         Section 3.5.      Deposit of Redemption Price...........................................................18
         Section 3.6.      Securities Redeemed in Part...........................................................18
ARTICLE IV. COVENANTS ...........................................................................................18
         Section 4.1.      Payment of Principal and Interest.....................................................18
         Section 4.2.      SEC Reports...........................................................................18
         Section 4.3.      Compliance Certificate................................................................18
         Section 4.4.      Stay, Extension and Usury Laws........................................................18
         Section 4.5.      Corporate Existence...................................................................19
         Section 4.6.      Taxes.................................................................................19
ARTICLE V. SUCCESSORS ...........................................................................................19
         Section 5.1.      When Company May Merge, Etc...........................................................19
         Section 5.2.      Successor Corporation Substituted.....................................................19
ARTICLE VI. DEFAULTS AND REMEDIES ...............................................................................20
         Section 6.1.      Events of Default.....................................................................20
         Section 6.2.      Acceleration of Maturity; Rescission and Annulment....................................21
         Section 6.3.      Collection of Indebtedness and Suits for Enforcement by Trustee.......................22
         Section 6.4.      Trustee May File Proofs of Claim......................................................23

                                       i



                                                                                                           
         Section 6.5.      Trustee May Enforce Claims Without Possession of Securities...........................23
         Section 6.6.      Application of Money Collected........................................................24
         Section 6.7.      Limitation on Suits...................................................................24
         Section 6.8.      Unconditional Right of Holders to Receive Principal and Interest......................25
         Section 6.9.      Restoration of Rights and Remedies....................................................25
         Section 6.10.     Rights and Remedies Cumulative........................................................25
         Section 6.11.     Delay or Omission Not Waiver..........................................................25
         Section 6.12.     Control by Holders....................................................................25
         Section 6.13.     Waiver of Past Defaults...............................................................26
         Section 6.14.     Undertaking for Costs.................................................................26
ARTICLE VII. TRUSTEE ............................................................................................26
         Section 7.1.      Duties of Trustee.....................................................................26
         Section 7.2.      Rights of Trustee.....................................................................28
         Section 7.3.      Individual Rights of Trustee..........................................................29
         Section 7.4.      Trustee's Disclaimer..................................................................28
         Section 7.5.      Notice of Defaults....................................................................29
         Section 7.6.      Reports by Trustee to Holders.........................................................29
         Section 7.7.      Compensation and Indemnity............................................................29
         Section 7.8.      Replacement of Trustee................................................................30
         Section 7.9.      Successor Trustee by Merger, Etc......................................................31
         Section 7.10.     Eligibility; Disqualification.........................................................31
         Section 7.11.     Preferential Collection of Claims Against Company.....................................31
ARTICLE VIII. SATISFACTION AND DISCHARGE; DEFEASANCE ............................................................31
         Section 8.1.      Satisfaction and Discharge of Indenture...............................................31
         Section 8.2.      Application of Trust Funds; Indemnification...........................................32
         Section 8.3.      Legal Defeasance of Securities of any Series..........................................33
         Section 8.4.      Covenant Defeasance...................................................................35
         Section 8.5.      Repayment to Company..................................................................36
         Section 8.6.      Reinstatement.........................................................................36
ARTICLE IX. AMENDMENTS AND WAIVERS ..............................................................................36
         Section 9.1.      Without Consent of Holders............................................................36
         Section 9.2.      With Consent of Holders...............................................................37
         Section 9.3.      Limitations...........................................................................37
         Section 9.4.      Compliance with Trust Indenture Act...................................................38
         Section 9.5.      Revocation and Effect of Consents.....................................................38
         Section 9.6.      Notation on or Exchange of Securities.................................................39
         Section 9.7.      Trustee Protected.....................................................................39
ARTICLE X. MISCELLANEOUS ........................................................................................39
         Section 10.1.     Trust Indenture Act Controls..........................................................39
         Section 10.2.     Notices...............................................................................39
         Section 10.3.     Communication by Holders with Other Holders...........................................40
         Section 10.4.     Certificate and Opinion as to Conditions Precedent....................................40
         Section 10.5.     Statements Required in Certificate or Opinion.........................................40
         Section 10.6.     Rules by Trustee and Agents...........................................................41
         Section 10.7.     Legal Holidays........................................................................41
         Section 10.8.     No Recourse Against Others............................................................41

                                       ii



                                                                                                           
         Section 10.9.     Counterparts..........................................................................41
         Section 10.10.    Governing Laws........................................................................41
         Section 10.11.    No Adverse Interpretation of Other Agreements.........................................41
         Section 10.12.    Successors............................................................................41
         Section 10.13.    Severability..........................................................................42
         Section 10.14.    Table of Contents, Headings, Etc......................................................42
         Section 10.15.    Securities in a Foreign Currency or in ECU............................................42
         Section 10.16.    Judgment Currency.....................................................................43
ARTICLE XI. SINKING FUNDS .......................................................................................43
         Section 11.1.     Applicability of Article..............................................................43
         Section 11.2.     Satisfaction of Sinking Fund Payments with Securities.................................44
         Section 11.3.     Redemption of Securities for Sinking Fund.............................................44

                                      iii


                                GERON CORPORATION

         Reconciliation and tie between Trust Indenture Act of 1939 and
                     Indenture, dated as of _________, 200_


                                                                             
          Section 310(a)(1)  ...................................................      7.10
                     (a)(2)  ...................................................      7.10
                     (a)(3)  ...................................................      Not Applicable
                     (a)(4)  ...................................................      Not Applicable
                     (a)(5)  ...................................................      7.10
                        (b)  ...................................................      7.10
             Section 311(a)  ...................................................      7.11
                        (b)  ...................................................      7.11
                        (c)  ...................................................      Not Applicable
             Section 312(a)  ...................................................      2.6
                        (b)  ...................................................      10.3
                        (c)  ...................................................      10.3
             Section 313(a)  ...................................................      7.6
                     (b)(1)  ...................................................      7.6
                     (b)(2)  ...................................................      7.6
                     (c)(1)  ...................................................      7.6
                        (d)  ...................................................      7.6
             Section 314(a)  ...................................................      4.2, 10.5
                        (b)  ...................................................      Not Applicable
                     (c)(1)  ...................................................      10.4
                     (c)(2)  ...................................................      10.4
                     (c)(3)  ...................................................      Not Applicable
                        (d)  ...................................................      Not Applicable
                        (e)  ...................................................      10.5
                        (f)  ...................................................      Not Applicable
             Section 315(a)  ...................................................      7.1
                        (b)  ...................................................      7.5
                        (c)  ...................................................      7.1
                        (d)  ...................................................      7.1
                        (e)  ...................................................      6.14
             Section 316(a)  ...................................................      2.10
                  (a)(1)(A)  ...................................................      6.12
                  (a)(1)(B)  ...................................................      6.13
                        (b)  ...................................................      6.8
          Section 317(a)(1)  ...................................................      6.3
                     (a)(2)  ...................................................      6.4
                        (b)  ...................................................      2.5
             Section 318(a)  ...................................................      10.1


Note:    This reconciliation and tie shall not, for any purpose, be deemed to
be part of the Indenture.



                  Indenture dated as of _________, 200_ between Geron
Corporation, a Delaware corporation ("Company"), and [Name of Trustee], a
________________ ("Trustee").

                  Each party agrees as follows for the benefit of the other
party and for the equal and ratable benefit of the Holders of the Securities
issued under this Indenture.

                                   ARTICLE I.
                   DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.1.      Definitions.

                  "Additional Amounts" means any additional amounts which are
required hereby or by any Security, under circumstances specified herein or
therein, to be paid by the Company in respect of certain taxes imposed on
Holders specified therein and which are owing to such Holders.

                  "Affiliate" of any specified person means any other person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified person. For the purposes of this definition,
"control" (including, with correlative meanings, the terms "controlled by" and
"under common control with"), as used with respect to any person, shall mean the
possession, directly or indirectly, of the power to direct or cause the
direction of the management or policies of such person, whether through the
ownership of voting securities or by agreement or otherwise.

                  "Agent" means any Registrar, Paying Agent, Service Agent or
authenticating agent.

                  "Authorized Newspaper" means a newspaper in an official
language of the country of publication customarily published at least once a day
for at least five days in each calendar week and of general circulation in the
place in connection with which the term is used. If it shall be impractical to
make any publication of any notice required hereby in an Authorized Newspaper,
any publication or other notice in lieu thereof that is made or given by the
Trustee shall constitute a sufficient publication of such notice.

                  "Bearer" means anyone in possession from time to time of a
Bearer Security.

                  "Bearer Security" means any Security, including any interest
coupon appertaining thereto, that does not provide for the identification of the
Holder thereof.

                  "Board of Directors" means the Board of Directors of the
Company or any duly authorized committee thereof.

                  "Board Resolution" means a copy of a resolution certified by
the Secretary or an Assistant Secretary of the Company to have been adopted by
the Board of Directors or pursuant to authorization by the Board of Directors
and to be in full force and effect on the date of the certificate and delivered
to the Trustee.

                                       2


                  "Business Day" means, unless otherwise provided by Board
Resolution, Officers' Certificate or supplemental indenture hereto for a
particular Series, any day except a Saturday, Sunday or a legal holiday in The
City of New York or The City of San Francisco on which banking institutions are
authorized or required by law, regulation or executive order to close.

                  "Company" means the party named as such above until a
successor replaces it and thereafter means the successor.

                  "Company Order" means a written order signed in the name of
the Company by two Officers, one of whom must be the Company's chief executive
officer, chief financial officer or principal accounting officer.

                  "Company Request" means a written request signed in the name
of the Company by its Chairman of the Board, a President or a Vice President,
and by its Treasurer, an Assistant Treasurer, its Secretary or an Assistant
Secretary, and delivered to the Trustee.

                  "Corporate Trust Office" means the office of the Trustee at
which at any particular time its corporate trust business shall be principally
administered.

                  "Debt" of any person as of any date means, without
duplication, all indebtedness of such person in respect of borrowed money,
including all interest, fees and expenses owed in respect thereto (whether or
not the recourse of the lender is to the whole of the assets of such person or
only to a portion thereof), or evidenced by bonds, notes, debentures or similar
instruments.

                  "Default" means any event which is, or after notice or passage
of time would be, an Event of Default.

                  "Depository" means, with respect to the Securities of any
Series issuable or issued in whole or in part in the form of one or more Global
Securities, the person designated as Depository for such Series by the Company,
which Depository shall be a clearing agency registered under the Exchange Act;
and if at any time there is more than one such person, "Depository" as used with
respect to the Securities of any Series shall mean the Depository with respect
to the Securities of such Series.

                  "Discount Security" means any Security that provides for an
amount less than the stated principal amount thereof to be due and payable upon
declaration of acceleration of the maturity thereof pursuant to Section 6.2.

                  "Dollars" means the currency of The United States of America.

                  "ECU" means the European Currency Unit as determined by the
Commission of the European Union.

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

                  "Foreign Currency" means any currency or currency unit issued
by a government other than the government of The United States of America.

                                       3


                  "Foreign Government Obligations" means with respect to
Securities of any Series that are denominated in a Foreign Currency, (i) direct
obligations of the government that issued or caused to be issued such currency
for the payment of which obligations its full faith and credit is pledged or
(ii) obligations of a person controlled or supervised by or acting as an agency
or instrumentality of such government the timely payment of which is
unconditionally guaranteed as a full faith and credit obligation by such
government, which, in either case under clauses (i) or (ii), are not callable or
redeemable at the option of the issuer thereof.

                  "Global Security" or "Global Securities" means a Security or
Securities, as the case may be, in the form established pursuant to Section 2.2
evidencing all or part of a Series of Securities, issued to the Depository for
such Series or its nominee, and registered in the name of such Depository or
nominee.

                  "Holder" or "Securityholder" means a person in whose name a
Security is registered or the holder of a Bearer Security.

                  "Indenture" means this Indenture as amended from time to time
and shall include the form and terms of particular Series of Securities
established as contemplated hereunder.

                  "interest" with respect to any Discount Security which by its
terms bears interest only after Maturity, means interest payable after Maturity.

                  "Maturity," when used with respect to any Security or
installment of principal thereof, means the date on which the principal of such
Security or such installment of principal becomes due and payable as therein or
herein provided, whether at the Stated Maturity or by declaration of
acceleration, call for redemption, notice of option to elect repayment or
otherwise.

                  "Officer" means the Chairman of the Board, any President, any
Vice-President, the Treasurer, the Secretary, any Assistant Treasurer or any
Assistant Secretary of the Company.

                  "Officers' Certificate" means a certificate signed by two
Officers, one of whom must be the Company's principal executive officer,
principal financial officer or principal accounting officer.

                  "Opinion of Counsel" means a written opinion of legal counsel
who is acceptable to the Trustee. The counsel may be an employee of or counsel
to the Company.

                  "person" means any individual, corporation, partnership, joint
venture, association, limited liability company, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

                  "principal" of a Security means the principal of the Security
plus, when appropriate, the premium, if any, on, and any Additional Amounts in
respect of, the Security.

                  "Responsible Officer" means any officer of the Trustee in its
Corporate Trust Office and also means, with respect to a particular corporate
trust matter, any other officer to whom any corporate trust matter is referred
because of his or her knowledge of and familiarity with a particular subject.

                                       4


                  "SEC" means the Securities and Exchange Commission.

                  "Securities" means the debentures, notes or other debt
instruments of the Company of any Series authenticated and delivered under this
Indenture.

                  "Series" or "Series of Securities" means each series of
debentures, notes or other debt instruments of the Company created pursuant to
Sections 2.1 and 2.2 hereof.

                  "Significant Subsidiary" means (i) any direct or indirect
Subsidiary of the Company that would be a "significant subsidiary" as defined in
Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities
Act of 1933, as amended, as such regulation is in effect on the date hereof, or
(ii) any group of direct or indirect Subsidiaries of the Company that, taken
together as a group, would be a "significant subsidiary" as defined in Article
1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act of
1933, as amended, as such regulation is in effect on the date hereof.

                  "Stated Maturity" when used with respect to any Security or
any installment of principal thereof or interest thereon, means the date
specified in such Security as the fixed date on which the principal of such
Security or such installment of principal or interest is due and payable.

                  "Subsidiary" of any specified person means any corporation of
which at least a majority of the outstanding stock having by the terms thereof
ordinary voting power for the election of directors of such corporation
(irrespective of whether or not at the time stock of any other class or classes
of such corporation shall have or might have voting power by reason of the
happening of any contingency) is at the time directly or indirectly owned by
such person, or by one or more other Subsidiaries, or by such person and one or
more other Subsidiaries.

                  "TIA" means the Trust Indenture Act of 1939 (15 U.S. Code
Sections 77aaa-77bbbb) as in effect on the date of this Indenture; provided,
however, that in the event the Trust Indenture Act of 1939 is amended after such
date, "TIA" means, to the extent required by any such amendment, the Trust
Indenture Act as so amended.

                  "Trustee" means the person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each person who is then a Trustee hereunder, and
if at any time there is more than one such person, "Trustee" as used with
respect to the Securities of any Series shall mean the Trustee with respect to
Securities of that Series.

                  "U.S. Government Obligations" means securities which are (i)
direct obligations of The United States of America for the payment of which its
full faith and credit is pledged or (ii) obligations of a person controlled or
supervised by and acting as an agency or instrumentality of The United States of
America the payment of which is unconditionally guaranteed as a full faith and
credit obligation by The United States of America, and which in the case of (i)
and (ii) are not callable or redeemable at the option of the issuer thereof, and
shall also include a depository receipt issued by a bank or trust company as
custodian with respect to any such U.S. Government Obligation or a specific
payment of interest on or principal of any such U.S. Government Obligation held
by such custodian for the account of the holder of a depository receipt,
provided that (except as required by law) such custodian is not authorized to
make any deduction from the amount payable to the holder of such depository
receipt from any amount received by the custodian in respect of the U.S.
Government Obligation evidenced by such depository receipt.


                                       5


Section 1.2.      Other Definitions.

                                                                  DEFINED IN
         TERM                                                      SECTION
         ----                                                     ----------

         "Bankruptcy Law"                                               6.1
         "Custodian"                                                    6.1
         "Event of Default"                                             6.1
         "Journal"                                                    10.15
         "Judgment Currency"                                          10.16
         "Legal Holiday"                                               10.7
         "mandatory sinking fund payment"                              11.1
         "Market Exchange Rate"                                       10.15
         "New York Banking Day"                                       10.16
         "optional sinking fund payment"                               11.1
         "Paying Agent"                                                 2.4
         "Registrar"                                                    2.4
         "Required Currency"                                          10.16
         "Service Agent"                                                2.4
         "successor person"                                             5.1

Section 1.3.      Incorporation by Reference of Trust Indenture Act.
                  -------------------------------------------------

                  Whenever this Indenture refers to a provision of the TIA, the
provision is incorporated by reference in and made a part of this Indenture. The
following TIA terms used in this Indenture have the following meanings:

                  "Commission" means the SEC.

                  "indenture securities" means the Securities.

                  "indenture security holder" means a Securityholder.

                  "indenture to be qualified" means this Indenture.

                  "indenture trustee" or "institutional trustee" means the
                  Trustee.

                  "obligor" on the indenture securities means the Company and
                  any successor obligor upon the Securities.


                                       6


                  All other terms used in this Indenture that are defined by the
TIA, defined by TIA reference to another statute or defined by SEC rule under
the TIA and not otherwise defined herein are used herein as so defined.

Section 1.4.      Rules of Construction.

                  Unless the context otherwise requires:

     (a)  a term has the meaning assigned to it;

     (b)  an accounting term not otherwise  defined has the meaning  assigned to
          it in accordance with generally accepted accounting principles;

     (c)  references to "generally  accepted  accounting  principles" shall mean
          generally accepted accounting principles in effect as of the time when
          and for the period as to which such  accounting  principles  are to be
          applied;

     (d)  "or" is not exclusive;

     (e)  words in the singular  include the plural,  and in the plural  include
          the singular; and

     (f)  provisions apply to successive events and transactions.

                                  ARTICLE II.
                                 THE SECURITIES

Section 2.1.      Issuable in Series.

                  The aggregate principal amount of Securities that may be
authenticated and delivered under this Indenture is unlimited. The Securities
may be issued in one or more Series. All Securities of a Series shall be
identical except as may be set forth in a Board Resolution, a supplemental
indenture or an Officers' Certificate detailing the adoption of the terms
thereof pursuant to the authority granted under a Board Resolution. In the case
of Securities of a Series to be issued from time to time, the Board Resolution,
Officers' Certificate or supplemental indenture may provide for the method by
which specified terms (such as interest rate, maturity date, record date or date
from which interest shall accrue) are to be determined. Securities may differ
between Series in respect of any matters, provided that all Series of Securities
shall be equally and ratably entitled to the benefits of the Indenture.

Section 2.2.      Establishment of Terms of Series of Securities.

                  At or prior to the issuance of any Securities within a Series,
the following shall be established (as to the Series generally, in the case of
Subsection 2.2.1 and either as to such Securities within the Series or as to the
Series generally in the case of Subsections 2.2.2 through 2.2.22) by a Board
Resolution, a supplemental indenture or an Officers' Certificate pursuant to
authority granted under a Board Resolution:


                                       7


          2.2.1. the title of the Series (which shall distinguish the Securities
of that particular Series from the Securities of any other Series);

          2.2.2. the price or prices (expressed as a percentage of the principal
amount thereof) at which the Securities of the Series will be issued;

          2.2.3. any limit upon the aggregate principal amount of the Securities
of the Series  which may be  authenticated  and  delivered  under this Indenture
(except for  Securities  authenticated  and delivered  upon registration  of
transfer of, or in exchange for, or in lieu of, other Securities of the Series
pursuant to Section 2.7, 2.8,  2.11,  3.6 or 9.6);

          2.2.4.  the date or dates on which the principal of the  Securities of
the Series is payable;

          2.2.5.  the rate or rates (which may be fixed or  variable)  per annum
or, if  applicable,  the method used to  determine  such rate or rates
(including, but not limited to, any commodity,  commodity index, stock exchange
index or  financial  index) at which the  Securities  of the Series shall bear
interest,  if any, the date or dates from which such interest,  if any,  shall
accrue, the date or dates on which such interest, if any, shall commence and be
payable and any regular record date for the interest payable on any interest
payment date;

          2.2.6.  the place or places where the  principal of and  interest,  if
any, on the Securities of the Series shall be payable, or the method of such
payment, if by wire transfer, mail or other means;

          2.2.7. if applicable, the period or periods within which, the price or
prices at which and the terms and conditions upon which the Securities of the
Series may be redeemed, in whole or in part, at the option of the Company;

          2.2.8.  the  obligation,  if any, of the Company to redeem or purchase
the Securities of the Series pursuant to any sinking fund or analogous
provisions or at the option of a Holder thereof and the period or periods
within which, the price or prices at which and the terms and conditions upon
which Securities of the Series shall be redeemed or purchased, in whole or in
part, pursuant to such obligation;

          2.2.9.  the dates,  if any,  on which and the price or prices at which
the Securities of the Series will be repurchased by the Company at the option
of the Holders thereof and other detailed terms and provisions of such
repurchase obligations;

          2.2.10.  if other than denominations of  $1,000 and any integral
multiple thereof, the denominations in which the Securities of the Series shall
be issuable;

          2.2.11.  the forms of the  Securities of the Series in bearer or fully
registered form (and, if in fully registered form, whether the Securities will
be issuable as Global Securities);


                                       8


          2.2.12. if other than the principal amount thereof, the portion of the
principal amount of the Securities of the Series that shall be payable upon
declaration of acceleration of the maturity thereof pursuant to Section 6.2;

          2.2.13.  the currency of denomination of the Securities of the Series,
which may be Dollars or any Foreign Currency, including, but not limited to,
the ECU, and if such currency of denomination is a composite currency other
than the ECU, the agency or organization, if any, responsible for overseeing
such composite currency;

          2.2.14. the designation of the currency,  currencies or currency units
in which payment of the principal of and interest, if any, on the Securities
of the Series will be made;

          2.2.15.  if  payments  of  principal  of or  interest,  if any, on the
Securities of the Series are to be made in one or more currencies or currency
units other than that or those in which such Securities are denominated, the
manner in which the exchange rate with respect to such payments will be
determined;

          2.2.16.  the manner in which the amounts of payment of principal of or
interest, if any, on the Securities of the Series will be determined, if such
amounts may be determined by reference to an index based on a currency or
currencies or by reference to a commodity, commodity index, stock exchange
index or financial index;

          2.2.17. the provisions,  if any, relating to any security provided for
the Securities of the Series;

          2.2.18.  if the  holders of  Securities  of the Series may  convert or
exchange the Securities into or for securities of the Issuer or of other
entities or other property, the period or periods within which, the rate or
rates at which and the terms and conditions upon which Securities of the Series
may be converted or exchanged, in whole or in part;

          2.2.19.  any  addition  to or change in the  Events of  Default  which
applies to any Securities of the Series and any change in the right of the
Trustee or the requisite Holders of such Securities to declare the principal
amount thereof due and payable pursuant to Section 6.2;

          2.2.20.  any  addition  to or  change  in the  covenants  set forth in
Articles IV or V which applies to Securities of the Series;

          2.2.21.  any other terms of the  Securities of the Series (which terms
shall not be inconsistent with the provisions of this Indenture, except as
permitted by Section 9.1, but which may modify or delete any provision of this
Indenture insofar as it applies to such Series); and

          2.2.22. any depositories,  interest rate calculation agents,  exchange
rate calculation agents or other agents with respect to Securities of such
Series if other than those appointed herein.

                  All Securities of any one Series need not be issued at the
same time and may be issued from time to time, consistent with the terms of this
Indenture, if so provided by or pursuant to the Board Resolution, supplemental
indenture or Officers' Certificate referred to above, and the authorized
principal amount of any Series may not be increased to provide for issuances of
additional Securities of such Series, unless otherwise provided in such Board
Resolution, supplemental indenture or Officers' Certificate.


                                       9


Section 2.3.      Execution and Authentication.

                  Two Officers shall sign the Securities for the Company by
manual or facsimile signature.

                  If an Officer whose signature is on a Security no longer holds
that office at the time the Security is authenticated, the Security shall
nevertheless be valid.

                  A Security shall not be valid until authenticated by the
manual signature of the Trustee or an authenticating agent. The signature shall
be conclusive evidence that the Security has been authenticated under this
Indenture.

                  The Trustee shall at any time, and from time to time,
authenticate Securities for original issue in the principal amount provided in
the Board Resolution, supplemental indenture hereto or Officers' Certificate,
upon receipt by the Trustee of a Company Order. Such Company Order may authorize
authentication and delivery pursuant to oral or electronic instructions from the
Company or its duly authorized agent or agents, which oral instructions shall be
promptly confirmed in writing. Each Security shall be dated the date of its
authentication unless otherwise provided by a Board Resolution, a supplemental
indenture hereto or an Officers' Certificate.

                  The aggregate principal amount of Securities of any Series
outstanding at any time may not exceed any limit upon the maximum principal
amount for such Series set forth in the Board Resolution, supplemental indenture
hereto or Officers' Certificate delivered pursuant to Section 2.2, except as
provided in Section 2.8.

                  Prior to the issuance of Securities of any Series, the Trustee
shall have received and (subject to Section 7.2) shall be fully protected in
relying on: (a) the Board Resolution, supplemental indenture hereto or Officers'
Certificate establishing the form of the Securities of that Series or of
Securities within that Series and the terms of the Securities of that Series or
of Securities within that Series, (b) an Officers' Certificate complying with
Section 10.4, and (c) an Opinion of Counsel complying with Section 10.4.

                  The Trustee shall have the right to decline to authenticate
and deliver any Securities of such Series: (a) if the Trustee, being advised by
counsel, determines that such action may not lawfully be taken; or (b) if the
Trustee in good faith by its board of directors or trustees, executive committee
or a trust committee of directors and/or vice-presidents shall determine that
such action would expose the Trustee to personal liability to Holders of any
then outstanding Series of Securities.

                  The Trustee may appoint an authenticating agent acceptable to
the Company to authenticate Securities. An authenticating agent may authenticate
Securities whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication by such agent. An
authenticating agent has the same rights as an Agent to deal with the Company or
an Affiliate.


                                       10


Section 2.4.      Registrar and Paying Agent.

                  The Company shall maintain, with respect to each Series of
Securities, at the place or places specified with respect to such Series
pursuant to Section 2.2, an office or agency where Securities of such Series may
be presented or surrendered for payment ("Paying Agent"), where Securities of
such Series may be surrendered for registration of transfer or exchange
("Registrar") and where notices and demands to or upon the Company in respect of
the Securities of such Series and this Indenture may be served ("Service
Agent"). The Registrar shall keep a register with respect to each Series of
Securities and to their transfer and exchange. The Company will give prompt
written notice to the Trustee of the name and address, and any change in the
name or address, of each Registrar, Paying Agent or Service Agent. If at any
time the Company shall fail to maintain any such required Registrar, Paying
Agent or Service Agent or shall fail to furnish the Trustee with the name and
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee, and the Company hereby
appoints the Trustee as its agent to receive all such presentations, surrenders,
notices and demands.

                  The Company may also from time to time designate one or more
co-registrars, additional paying agents or additional service agents and may
from time to time rescind such designations; provided, however, that no such
designation or rescission shall in any manner relieve the Company of its
obligations to maintain a Registrar, Paying Agent and Service Agent in each
place so specified pursuant to Section 2.2 for Securities of any Series for such
purposes. The Company will give prompt written notice to the Trustee of any such
designation or rescission and of any change in the name or address of any such
co-registrar, additional paying agent or additional service agent. The term
"Registrar" includes any co-registrar; the term "Paying Agent" includes any
additional paying agent; and the term "Service Agent" includes any additional
service agent.

                  The Company hereby appoints the Trustee the initial Registrar,
Paying Agent and Service Agent for each Series unless another Registrar, Paying
Agent or Service Agent, as the case may be, is appointed prior to the time
Securities of that Series are first issued.

Section 2.5.      Paying Agent to Hold Money in Trust.

                  The Company shall require each Paying Agent other than the
Trustee to agree in writing that the Paying Agent will hold in trust, for the
benefit of Securityholders of any Series of Securities, or the Trustee, all
money held by the Paying Agent for the payment of principal of or interest on
the Series of Securities, and will notify the Trustee of any default by the
Company in making any such payment. While any such default continues, the
Trustee may require a Paying Agent to pay all money held by it to the Trustee.
The Company at any time may require a Paying Agent to pay all money held by it
to the Trustee. Upon payment over to the Trustee, the Paying Agent (if other
than the Company or a Subsidiary) shall have no further liability for the money.
If the Company or a Subsidiary acts as Paying Agent, it shall segregate and hold
in a separate trust fund for the benefit of Securityholders of any Series of
Securities all money held by it as Paying Agent.


                                       11


Section 2.6.      Securityholder Lists.

                  The Trustee shall preserve in as current a form as is
reasonably practicable the most recent list available to it of the names and
addresses of Securityholders of each Series of Securities and shall otherwise
comply with TIA Section 312(a). If the Trustee is not the Registrar, the Company
shall furnish to the Trustee at least ten days before each interest payment date
and at such other times as the Trustee may request in writing a list, in such
form and as of such date as the Trustee may reasonably require, of the names and
addresses of Securityholders of each Series of Securities.

Section 2.7.      Transfer and Exchange.

                  Where Securities of a Series are presented to the Registrar or
a co-registrar with a request to register a transfer or to exchange them for an
equal principal amount of Securities of the same Series, the Registrar shall
register the transfer or make the exchange if its requirements for such
transactions are met. To permit registrations of transfers and exchanges, the
Trustee shall authenticate Securities at the Registrar's request. No service
charge shall be made for any registration of transfer or exchange (except as
otherwise expressly permitted herein), but the Company may require payment of a
sum sufficient to cover any transfer tax or similar governmental charge payable
in connection therewith (other than any such transfer tax or similar
governmental charge payable upon exchanges pursuant to Sections 2.11, 3.6 or
9.6).

                  Neither the Company nor the Registrar shall be required (a) to
issue, register the transfer of, or exchange Securities of any Series for the
period beginning at the opening of business fifteen days immediately preceding
the mailing of a notice of redemption of Securities of that Series selected for
redemption and ending at the close of business on the day of such mailing, or
(b) to register the transfer of or exchange Securities of any Series selected,
called or being called for redemption as a whole or the portion being redeemed
of any such Securities selected, called or being called for redemption in part.

Section 2.8.      Mutilated, Destroyed, Lost and Stolen Securities.

                  If any mutilated Security is surrendered to the Trustee, the
Company shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Security of the same Series and of like tenor and principal
amount and bearing a number not contemporaneously outstanding.

                  If there shall be delivered to the Company and the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any Security
and (ii) such security or indemnity as may be required by them to save each of
them and any agent of either of them harmless, then, in the absence of notice to
the Company or the Trustee that such Security has been acquired by a bona fide
purchaser, the Company shall execute and upon its request the Trustee shall
authenticate and make available for delivery, in lieu of any such destroyed,
lost or stolen Security, a new Security of the same Series and of like tenor and
principal amount and bearing a number not contemporaneously outstanding.


                                       12


                  In case any such mutilated, destroyed, lost or stolen Security
has become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

                  Upon the issuance of any new Security under this Section, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

                  Every new Security of any Series issued pursuant to this
Section in lieu of any destroyed, lost or stolen Security shall constitute an
original additional contractual obligation of the Company, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Securities of that Series duly issued
hereunder.

                  The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Securities.

Section 2.9.      Outstanding Securities.

                  The Securities outstanding at any time are all the Securities
authenticated by the Trustee except for those canceled by it, those delivered to
it for cancellation, those reductions in the interest on a Global Security
effected by the Trustee in accordance with the provisions hereof and those
described in this Section as not outstanding.

                  If a Security is replaced pursuant to Section 2.8, it ceases
to be outstanding until the Trustee receives proof satisfactory to it that the
replaced Security is held by a bona fide purchaser.

                  If the Paying Agent (other than the Company, a Subsidiary or
an Affiliate of any thereof) holds on the Maturity of Securities of a Series
money sufficient to pay such Securities payable on that date, then on and after
that date such Securities of the Series cease to be outstanding and interest on
them ceases to accrue.

                  A Security does not cease to be outstanding because the
Company or an Affiliate holds the Security.

                  In determining whether the Holders of the requisite principal
amount of outstanding Securities have given any request, demand, authorization,
direction, notice, consent or waiver hereunder, the principal amount of a
Discount Security that shall be deemed to be outstanding for such purposes shall
be the amount of the principal thereof that would be due and payable as of the
date of such determination upon a declaration of acceleration of the Maturity
thereof pursuant to Section 6.2.


                                       13


Section 2.10.     Treasury Securities.

                  In determining whether the Holders of the required principal
amount of Securities of a Series have concurred in any request, demand,
authorization, direction, notice, consent or waiver Securities of a Series owned
by the Company or an Affiliate shall be disregarded, except that for the
purposes of determining whether the Trustee shall be protected in relying on any
such request, demand, authorization, direction, notice, consent or waiver only
Securities of a Series that the Trustee knows are so owned shall be so
disregarded.

Section 2.11.     Temporary Securities.

                  Until definitive Securities are ready for delivery, the
Company may prepare and the Trustee shall authenticate temporary Securities upon
a Company Order. Temporary Securities shall be substantially in the form of
definitive Securities but may have variations that the Company considers
appropriate for temporary Securities. Without unreasonable delay, the Company
shall prepare and the Trustee upon request shall authenticate definitive
Securities of the same Series and date of maturity in exchange for temporary
Securities. Until so exchanged, temporary Securities shall have the same rights
under this Indenture as the definitive Securities.

Section 2.12.     Cancellation.

                  The Company at any time may deliver Securities to the Trustee
for cancellation. The Registrar and the Paying Agent shall forward to the
Trustee any Securities surrendered to them for registration of transfer,
exchange or payment. The Trustee shall cancel all Securities surrendered for
transfer, exchange, payment, replacement or cancellation and shall destroy such
canceled Securities (subject to the record retention requirement of the Exchange
Act) and deliver a certificate of such destruction to the Company, unless the
Company otherwise directs. The Company may not issue new Securities to replace
Securities that it has paid or delivered to the Trustee for cancellation.

Section 2.13.     Defaulted Interest.

                  If the Company defaults in a payment of interest on a Series
of Securities, it shall pay the defaulted interest, plus, to the extent
permitted by law, any interest payable on the defaulted interest, to the persons
who are Securityholders of the Series on a subsequent special record date. The
Company shall fix the record date and payment date. At least 30 days before the
record date, the Company shall mail to the Trustee and to each Securityholder of
the Series a notice that states the record date, the payment date and the amount
of interest to be paid. The Company may pay defaulted interest in any other
lawful manner.

Section 2.14.     Global Securities.

          2.14.1.  Terms  of  Securities.  A Board  Resolution,  a  supplemental
indenture hereto or an Officers' Certificate shall establish whether the
Securities of a Series shall be issued in whole or in part in the form of one
or more Global Securities and the Depository for such Global Security or
Securities.


                                       14


          2.14.2.  Transfer and Exchange.  Notwithstanding any provisions to the
contrary contained in Section 2.7 of the Indenture and in addition thereto, any
Global Security shall be exchangeable pursuant to Section 2.7 of the Indenture
for Securities registered in the names of Holders other than the Depository for
such Security or its nominee only if (i) such Depository notifies the Company
that it is unwilling or unable to continue as Depository for such Global
Security or if at any time such Depository ceases to be a clearing agency
registered under the Exchange Act, and, in either case, the Company fails to
appoint a successor Depository within 90 days of such event, (ii) the Company
executes and delivers to the Trustee an Officers' Certificate to the effect
that such Global Security shall be so exchangeable or (iii) an Event of Default
with respect to the Securities represented by such Global Security shall have
happened and be continuing. Any Global Security that is exchangeable pursuant
to the preceding sentence shall be exchangeable for Securities registered in
such names as the Depository shall direct in writing in an aggregate principal
amount equal to the principal amount of the Global Security with like tenor
and terms.

                  Except as provided in this Section 2.14.2, a Global Security
may not be transferred except as a whole by the Depository with respect to such
Global Security to a nominee of such Depository, by a nominee of such Depository
to such Depository or another nominee of such Depository or by the Depository or
any such nominee to a successor Depository or a nominee of such a successor
Depository.

          2.14.3. Legend. Unless otherwise provided pursuant to Section 2.2, any
Global Security issued hereunder shall bear a legend in substantially the
following form:

                  "This Security is a Global Security within the meaning of the
Indenture hereinafter referred to and is registered in the name of the
Depository or a nominee of the Depository. This Security is exchangeable for
Securities registered in the name of a person other than the Depository or its
nominee only in the limited circumstances described in the Indenture, and may
not be transferred except as a whole by the Depository to a nominee of the
Depository, by a nominee of the Depository to the Depository or another nominee
of the Depository or by the Depository or any such nominee to a successor
Depository or a nominee of such a successor Depository."

          2.14.4.  Acts of Holders.  The  Depository,  as a Holder,  may appoint
agents and otherwise authorize participants to give or take any request,
demand, authorization, direction, notice, consent, waiver or other action which
a Holder is entitled to give or take under the Indenture.

          2.14.5.  Payments.   Notwithstanding  the  other  provisions  of  this
Indenture, unless otherwise specified as contemplated by Section 2.2, payment
of the principal of, premium, if any, and interest, if any, on any Global
Security shall be made to the Holder thereof.

          2.14.6.  Consents,  Declaration and Directions.  Except as provided in
Section 2.14.5, the Company, the Trustee and any Agent shall treat a person as
the Holder of such principal amount of outstanding Securities of such Series
represented by a Global Security as shall be specified in a written statement
of the Depository with respect to such Global Security, for purposes of
obtaining any consents, declarations, waivers or directions required to be
given by the Holders pursuant to this Indenture.


                                       15


Section 2.15.     CUSIP Numbers.

                  The Company in issuing the Securities may use "CUSIP" numbers
(if then generally in use), and, if so, the Trustee shall use "CUSIP" numbers in
notices of redemption as a convenience to Holders; provided that any such notice
may state that no representation is made as to the correctness of such numbers
either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other elements of
identification printed on the Securities, and any such redemption shall not be
affected by any defect in or omission of such numbers.

                                  ARTICLE III.
                                   REDEMPTION

Section 3.1.      Notice to Trustee.

                  The Company may, with respect to any Series of Securities,
reserve the right to redeem and pay the Series of Securities or may covenant to
redeem and pay the Series of Securities or any part thereof prior to the Stated
Maturity thereof at such time and on such terms as provided for in such
Securities. If a Series of Securities is redeemable and the Company wants or is
obligated to redeem prior to the Stated Maturity thereof all or part of the
Series of Securities pursuant to the terms of such Securities, it shall notify
the Trustee of the redemption date and the principal amount of Series of
Securities to be redeemed. The Company shall give the notice at least 45 days
before the redemption date (or such shorter notice as may be acceptable to the
Trustee).

Section 3.2.      Selection of Securities to be Redeemed.

                  Unless otherwise indicated for a particular Series by a Board
Resolution, a supplemental indenture or an Officers' Certificate, if less than
all the Securities of a Series are to be redeemed, the Trustee shall select the
Securities of the Series to be redeemed in any manner that the Trustee deems
fair and appropriate. The Trustee shall make the selection from Securities of
the Series outstanding not previously called for redemption. The Trustee may
select for redemption portions of the principal of Securities of the Series that
have denominations larger than $1,000. Securities of the Series and portions of
them it selects shall be in amounts of $1,000 or whole multiples of $1,000 or,
with respect to Securities of any Series issuable in other denominations
pursuant to Section 2.2.10, the minimum principal denomination for each Series
and integral multiples thereof. Provisions of this Indenture that apply to
Securities of a Series called for redemption also apply to portions of
Securities of that Series called for redemption.

Section 3.3.      Notice of Redemption.

                  Unless otherwise indicated for a particular Series by a Board
Resolution, a supplemental indenture hereto or an Officers' Certificate, at
least 30 days but not more than 60 days before a redemption date, the Company
shall mail a notice of redemption by first-class mail to each Holder whose
Securities are to be redeemed and if any Bearer Securities are outstanding,
publish on one occasion a notice in an Authorized Newspaper.


                                       16


                  The notice shall identify the Securities of the Series to be
redeemed and shall state:

          (a)  the redemption date;

          (b)  the redemption price;

          (c)  the name and address of the Paying Agent;

          (d)  that  Securities  of the  Series  called for  redemption  must be
               surrendered to the Paying Agent to collect the redemption  price;

          (e)  that interest on  Securities of the Series called for  redemption
               ceases to accrue on and after the redemption date; and

          (f)  any  other  information  as may be  required  by the terms of the
               particular Series or the Securities of a Series being redeemed.

                  At the Company's request, the Trustee shall give the notice of
redemption in the Company's name and at its expense.

Section 3.4.      Effect of Notice of Redemption.

                  Once notice of redemption is mailed or published as provided
in Section 3.3, Securities of a Series called for redemption become due and
payable on the redemption date and at the redemption price. A notice of
redemption may not be conditional. Upon surrender to the Paying Agent, such
Securities shall be paid at the redemption price plus accrued interest to the
redemption date.

Section 3.5.      Deposit of Redemption Price.

                  On or before the redemption date, the Company shall deposit
with the Paying Agent money sufficient to pay the redemption price of and
accrued interest, if any, on all Securities to be redeemed on that date.

Section 3.6.      Securities Redeemed in Part.

                  Upon surrender of a Security that is redeemed in part, the
Trustee shall authenticate for the Holder a new Security of the same Series and
the same Maturity equal in principal amount to the unredeemed portion of the
Security surrendered.


                                       17


                                   ARTICLE IV.
                                    COVENANTS

Section 4.1.      Payment of Principal and Interest.

                  The Company covenants and agrees for the benefit of the
Holders of each Series of Securities that it will duly and punctually pay the
principal of and interest, if any, on the Securities of that Series in
accordance with the terms of such Securities and this Indenture.

Section 4.2.      SEC Reports.

                  The Company shall deliver to the Trustee within 15 days after
it files them with the SEC copies of the annual reports and of the information,
documents, and other reports (or copies of such portions of any of the foregoing
as the SEC may by rules and regulations prescribe) which the Company is required
to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act. The
Company also shall comply with the other provisions of TIA Section 314(a).

Section 4.3.      Compliance Certificate.

                  The Company shall deliver to the Trustee, within 90 days after
the end of each fiscal year of the Company, an Officers' Certificate stating
that a review of the activities of the Company and its Subsidiaries during the
preceding fiscal year has been made under the supervision of the signing
Officers with a view to determining whether the Company has kept, observed,
performed and fulfilled its obligations under this Indenture, and further
stating, as to each such Officer signing such certificate, that to the best of
his knowledge the Company has kept, observed, performed and fulfilled each and
every covenant contained in this Indenture and is not in default in the
performance or observance of any of the terms, provisions and conditions hereof
(or, if a Default or Event of Default shall have occurred, describing all such
Defaults or Events of Default of which he may have knowledge).

                  The Company will, so long as any of the Securities are
outstanding, deliver to the Trustee, forthwith upon becoming aware of any
Default or Event of Default, an Officers' Certificate specifying such Default or
Event of Default and what action the Company is taking or proposes to take with
respect thereto.

Section 4.4.      Stay, Extension and Usury Laws.

                  The Company covenants (to the extent that it may lawfully do
so) that it will not at any time insist upon, plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay, extension or usury law
wherever enacted, now or at any time hereafter in force, which may affect the
covenants or the performance of this Indenture or the Securities; and the
Company (to the extent it may lawfully do so) hereby expressly waives all
benefit or advantage of any such law and covenants that it will not, by resort
to any such law, hinder, delay or impede the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law has been enacted.


                                       18


Section 4.5.      Corporate Existence.

                  Subject to Article V, the Company will do or cause to be done
all things necessary to preserve and keep in full force and effect its corporate
existence and the corporate, partnership or other existence of each Significant
Subsidiary in accordance with the respective organizational documents of each
Significant Subsidiary and the rights (charter and statutory), licenses and
franchises of the Company and its Significant Subsidiaries; provided, however,
that the Company shall not be required to preserve any such right, license or
franchise, or the corporate, partnership or other existence of any Significant
Subsidiary, if the Board of Directors shall determine that the preservation
thereof is no longer desirable in the conduct of the business of the Company and
its Subsidiaries taken as a whole and that the loss thereof is not adverse in
any material respect to the Holders.

Section 4.6.      Taxes.

                  The Company shall, and shall cause each of its Significant
Subsidiaries to, pay prior to delinquency all taxes, assessments and
governmental levies, except as contested in good faith and by appropriate
proceedings.

                                   ARTICLE V.
                                   SUCCESSORS

Section 5.1.      When Company May Merge, Etc.

                  The Company shall not consolidate with or merge into, or
convey, transfer or lease all or substantially all of its properties and assets
to, any person (a "successor person"), and may not permit any person to merge
into, or convey, transfer or lease its properties and assets substantially as an
entirety to, the Company, unless:

          (a)  the  successor  person  (if any) is a  corporation,  partnership,
               trust or other entity  organized and validly  existing  under the
               laws of any U.S. domestic  jurisdiction and expressly assumes the
               Company's  obligations on the Securities and under this Indenture
               and

          (b)  immediately after giving effect to the transaction, no Default or
               Event of Default, shall have occurred and be continuing.

                  The Company shall deliver to the Trustee prior to the
consummation of the proposed transaction an Officers' Certificate to the
foregoing effect and an Opinion of Counsel stating that the proposed transaction
and such supplemental indenture comply with this Indenture.

Section 5.2.      Successor Corporation Substituted.

                  Upon any consolidation or merger, or any sale, lease,
conveyance or other disposition of all or substantially all of the assets of the
Company in accordance with Section 5.1, the successor corporation formed by such
consolidation or into or with which the Company is merged or to which such sale,
lease, conveyance or other disposition is made shall succeed to, and be


                                       19


substituted for, and may exercise every right and power of, the Company under
this Indenture with the same effect as if such successor person has been named
as the Company herein; provided, however, that the predecessor Company in the
case of a sale, lease, conveyance or other disposition shall not be released
from the obligation to pay the principal of and interest, if any, on the
Securities.

                                  ARTICLE VI.
                              DEFAULTS AND REMEDIES

Section 6.1.      Events of Default.

                  "Event of Default," wherever used herein with respect to
Securities of any Series, means any one of the following events, unless in the
establishing Board Resolution, supplemental indenture or Officers' Certificate,
it is provided that such Series shall not have the benefit of said Event of
Default:

          (a)  default in the payment of any  interest  on any  Security of that
               Series when it becomes due and payable,  and  continuance of such
               default for a period of 30 days (unless the entire amount of such
               payment is  deposited  by the Company  with the Trustee or with a
               Paying Agent prior to the  expiration of such period of 30 days);
               or

          (b)  default in the payment of the  principal  of any Security of that
               Series at its Maturity; or

          (c)  default in the deposit of any sinking fund  payment,  when and as
               due in respect of any Security of that Series; or

          (d)  default in the  performance or breach of any covenant or warranty
               of the  Company  in this  Indenture  (other  than a  covenant  or
               warranty that has been included in this Indenture  solely for the
               benefit of Series of Securities  other than that  Series),  which
               default continues uncured for a period of 60 days after there has
               been given,  by registered  or certified  mail, to the Company by
               the  Trustee or to the  Company and the Trustee by the Holders of
               at least 25% in principal amount of the outstanding Securities of
               that Series a written  notice  specifying  such default or breach
               and requiring it to be remedied and stating that such notice is a
               "Notice of Default" hereunder; or

          (e)  the Company or any of its Significant Subsidiaries pursuant to or
               within the meaning of any Bankruptcy Law:

               (i)  commences a voluntary case,

               (ii) consents  to the entry of an order for relief  against it in
                    an involuntary case,

               (iii) consents to the appointment of a Custodian of it or for all
                    or substantially all of its property,

               (iv) makes a general assignment for the benefit of its creditors,
                    or


                                       20


               (v)  generally is unable to pay its debts as the same become due;
                    or

          (f)  a court of competent jurisdiction enters an order or decree under
               any Bankruptcy Law that:

               (i)  is for relief against the Company or any of its  Significant
                    Subsidiaries in an involuntary case,

               (ii) appoints  a   Custodian   of  the  Company  or  any  of  its
                    Significant  Subsidiaries or for all or substantially all of
                    its property, or

               (iii) orders  the  liquidation  of  the  Company  or  any  of its
                    Significant Subsidiaries,

         and the order or decree remains unstayed and in effect for 60 days; or

          (g)  any other Event of Default provided with respect to Securities of
               that  Series,  which  is  specified  in  a  Board  Resolution,  a
               supplemental  indenture  hereto or an Officers'  Certificate,  in
               accordance with Section 2.2.19.

                  The term "Bankruptcy Law" means title 11, U.S. Code or any
similar Federal or State law for the relief of debtors. The term "Custodian"
means any receiver, trustee, assignee, liquidator or similar official under any
Bankruptcy Law.

Section 6.2.      Acceleration of Maturity; Rescission and Annulment.

                  If an Event of Default with respect to Securities of any
Series at the time outstanding occurs and is continuing (other than an Event of
Default referred to in Section 6.1(e) or (f)) then in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
outstanding Securities of that Series may declare the principal amount (or, if
any Securities of that Series are Discount Securities, such portion of the
principal amount as may be specified in the terms of such Securities) of and
accrued and unpaid interest, if any, on all of the Securities of that Series to
be due and payable immediately, by a notice in writing to the Company (and to
the Trustee if given by Holders), and upon any such declaration such principal
amount (or specified amount) and accrued and unpaid interest, if any, shall
become immediately due and payable. If an Event of Default specified in Section
6.1(e) or (f) shall occur, the principal amount (or specified amount) of and
accrued and unpaid interest, if any, on all outstanding Securities shall ipso
facto become and be immediately due and payable without any declaration or other
act on the part of the Trustee or any Holder.

                  At any time after such a declaration of acceleration with
respect to any Series has been made and before a judgment or decree for payment
of the money due has been obtained by the Trustee as hereinafter in this Article
provided, the Holders of a majority in principal amount of the outstanding
Securities of that Series, by written notice to the Company and the Trustee, may
rescind and annul such declaration and its consequences if:

          (a)  the  Company  has  paid  or  deposited  with  the  Trustee  a sum
               sufficient to pay


                                       21


               (i)  all  overdue  interest,  if any, on all  Securities  of that
                    Series,

               (ii) the  principal of any  Securities  of that Series which have
                    become   due   otherwise   than  by  such   declaration   of
                    acceleration  and  interest  thereon  at the  rate or  rates
                    prescribed therefor in such Securities,

               (iii) to the  extent  that  payment of such  interest  is lawful,
                    interest upon any overdue  principal and overdue interest at
                    the rate or rates  prescribed  therefor in such  Securities,
                    and

               (iv) all sums paid or advanced by the Trustee  hereunder  and the
                    reasonable   compensation,   expenses,   disbursements   and
                    advances of the Trustee, its agents and counsel;

and

          (b)  all Events of Default with respect to  Securities of that Series,
               other than the non-payment of the principal of Securities of that
               Series  which  have  become  due  solely by such  declaration  of
               acceleration,  have been cured or waived as  provided  in Section
               6.13.

                  No such rescission shall affect any subsequent Default or
impair any right consequent thereon.

Section 6.3.      Collection of Indebtedness and Suits for Enforcement by
                  Trustee.

                  The Company covenants that if

          (a)  default is made in the payment of any  interest  on any  Security
               when such  interest  becomes  due and  payable  and such  default
               continues for a period of 30 days, or

          (b)  default is made in the payment of  principal  of any  Security at
               the Maturity thereof, or

          (c)  default is made in the deposit of any sinking  fund  payment when
               and as due by the terms of a Security,

then, the Company will, upon demand of the Trustee, pay to it, for the benefit
of the Holders of such Securities, the whole amount then due and payable on such
Securities for principal and interest and, to the extent that payment of such
interest shall be legally enforceable, interest on any overdue principal or any
overdue interest, at the rate or rates prescribed therefor in such Securities,
and, in addition thereto, such further amount as shall be sufficient to cover
the costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel.

                  If the Company fails to pay such amounts forthwith upon such
demand, the Trustee, in its own name and as trustee of an express trust, may
institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company or any other obligor upon such Securities
and collect the moneys adjudged or deemed to be payable in the manner provided
by law out of the property of the Company or any other obligor upon such
Securities, wherever situated.


                                       22


                  If an Event of Default with respect to any Securities of any
Series occurs and is continuing, the Trustee may in its discretion proceed to
protect and enforce its rights and the rights of the Holders of Securities of
such Series by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any such rights, whether for the specific
enforcement of any covenant or agreement in this Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.

Section 6.4.      Trustee May File Proofs of Claim.

                  In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or
other judicial proceeding relative to the Company or any other obligor upon the
Securities or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal of the Securities
shall then be due and payable as therein expressed or by declaration or
otherwise and irrespective of whether the Trustee shall have made any demand on
the Company for the payment of overdue principal or interest) shall be entitled
and empowered, by intervention in such proceeding or otherwise,

          (a)  to file and prove a claim for the whole amount of  principal  and
               interest  owing and unpaid in respect  of the  Securities  and to
               file  such  other  papers or  documents  as may be  necessary  or
               advisable  in order to have the claims of the Trustee  (including
               any   claim   for   the   reasonable   compensation,    expenses,
               disbursements  and  advances  of  the  Trustee,  its  agents  and
               counsel) and of the Holders allowed in such judicial  proceeding,
               and

          (b)  to collect and receive  any moneys or other  property  payable or
               deliverable  on any such claims and to distribute  the same,  and
               any   custodian,   receiver,   assignee,   trustee,   liquidator,
               sequestrator  or other  similar  official  in any  such  judicial
               proceeding  is  hereby  authorized  by each  Holder  to make such
               payments to the Trustee and, in the event that the Trustee  shall
               consent to the making of such  payments  directly to the Holders,
               to  pay to the  Trustee  any  amount  due it for  the  reasonable
               compensation,   expenses,   disbursements  and  advances  of  the
               Trustee,  its agents and counsel,  and any other  amounts due the
               Trustee under Section 7.7.

                  Nothing herein contained shall be deemed to authorize the
Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

Section 6.5.      Trustee May Enforce Claims Without Possession of Securities.

                                       23


                  All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, be for the
ratable benefit of the Holders of the Securities in respect of which such
judgment has been recovered.

Section 6.6.      Application of Money Collected.

                  Any money collected by the Trustee pursuant to this Article
shall be applied in the following order, at the date or dates fixed by the
Trustee and, in case of the distribution of such money on account of principal
or interest, upon presentation of the Securities and the notation thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

                  First: To the payment of all amounts due the Trustee under
Section 7.7; and

                  Second: To the payment of the amounts then due and unpaid for
principal of and interest on the Securities in respect of which or for the
benefit of which such money has been collected, ratably, without preference or
priority of any kind, according to the amounts due and payable on such
Securities for principal and interest, respectively; and

                  Third: To the Company.

Section 6.7.      Limitation on Suits.

                  No Holder of any Security of any Series shall have any right
to institute any proceeding, judicial or otherwise, with respect to this
Indenture, or for the appointment of a receiver or trustee, or for any other
remedy hereunder, unless

          (a)  such Holder has previously given written notice to the Trustee of
               a continuing  Event of Default with respect to the  Securities of
               that Series;

          (b)  the  Holders  of not less  than 25% in  principal  amount  of the
               outstanding  Securities  of that Series  shall have made  written
               request to the  Trustee to  institute  proceedings  in respect of
               such Event of Default in its own name as Trustee hereunder;

          (c)  such Holder or Holders  have  offered to the  Trustee  reasonable
               indemnity  against  the costs,  expenses  and  liabilities  to be
               incurred in compliance with such request;

          (d)  the Trustee for 60 days after its receipt of such notice, request
               and  offer  of  indemnity   has  failed  to  institute  any  such
               proceeding; and

          (e)  no  direction  inconsistent  with such  written  request has been
               given to the Trustee  during such 60-day period by the Holders of
               a majority in principal  amount of the outstanding  Securities of
               that Series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all such
Holders.


                                       24


Section 6.8.      Unconditional Right of Holders to Receive Principal and
                  Interest.

                  Notwithstanding any other provision in this Indenture, the
Holder of any Security shall have the right, which is absolute and
unconditional, to receive payment of the principal of and interest, if any, on
such Security on the Stated Maturity or Stated Maturities expressed in such
Security (or, in the case of redemption, on the redemption date) and to
institute suit for the enforcement of any such payment, and such rights shall
not be impaired without the consent of such Holder.

Section 6.9.      Restoration of Rights and Remedies.

                  If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Trustee and the Holders shall
be restored severally and respectively to their former positions hereunder and
thereafter all rights and remedies of the Trustee and the Holders shall continue
as though no such proceeding had been instituted.

Section 6.10.     Rights and Remedies Cumulative.

                  Except as otherwise provided with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities in Section 2.8, no
right or remedy herein conferred upon or reserved to the Trustee or to the
Holders is intended to be exclusive of any other right or remedy, and every
right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

Section 6.11.     Delay or Omission Not Waiver.

                  No delay or omission of the Trustee or of any Holder of any
Securities to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein. Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time to
time, and as often as may be deemed expedient, by the Trustee or by the Holders,
as the case may be.

Section 6.12.     Control by Holders.

                  The Holders of a majority in principal amount of the
outstanding Securities of any Series shall have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
Trustee, or exercising any trust or power conferred on the Trustee, with respect
to the Securities of such Series, provided that


                                       25


          (a)  such  direction  shall not be in conflict with any rule of law or
               with this Indenture,

          (b)  the  Trustee  may take any  other  action  deemed  proper  by the
               Trustee which is not inconsistent with such direction, and

          (c)  subject to the  provisions of Section 6.1, the Trustee shall have
               the right to decline to follow any such  direction if the Trustee
               in good faith  shall,  by a  Responsible  Officer of the Trustee,
               determine  that the  proceeding  so  directed  would  involve the
               Trustee in personal liability.

Section 6.13.     Waiver of Past Defaults.

                  Subject to Section 6.2, the Holders of not less than a
majority in principal amount of the outstanding Securities of any Series may on
behalf of the Holders of all the Securities of such Series waive any past
Default hereunder with respect to such Series and its consequences, except a
Default in the payment of the principal of or interest on any Security of such
Series (provided, however, that the Holders of a majority in principal amount of
the outstanding Securities of any Series may rescind an acceleration and its
consequences, including any related payment default that resulted from such
acceleration). Upon any such waiver, such Default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other Default or impair any right consequent thereon.

Section 6.14.     Undertaking for Costs.

                  All parties to this Indenture agree, and each Holder of any
Security by his acceptance thereof shall be deemed to have agreed, that any
court may in its discretion require, in any suit for the enforcement of any
right or remedy under this Indenture, or in any suit against the Trustee for any
action taken, suffered or omitted by it as Trustee, the filing by any party
litigant in such suit of an undertaking to pay the costs of such suit, and that
such court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party litigant;
but the provisions of this Section shall not apply to any suit instituted by the
Company, to any suit instituted by the Trustee, to any suit instituted by any
Holder, or group of Holders, holding in the aggregate more than 10% in principal
amount of the outstanding Securities of any Series, or to any suit instituted by
any Holder for the enforcement of the payment of the principal of or interest on
any Security on or after the Stated Maturity or Stated Maturities expressed in
such Security (or, in the case of redemption, on the redemption date).

                                  ARTICLE VII.
                                     TRUSTEE

Section 7.1.      Duties of Trustee.


                                       26


          (a)  If an  Event of  Default  has  occurred  and is  continuing,  the
               Trustee shall exercise the rights and powers vested in it by this
               Indenture  and use the same  degree  of care  and  skill in their
               exercise  as a  prudent  man  would  exercise  or use  under  the
               circumstances in the conduct of his own affairs.

          (b)  Except during the continuance of an Event of Default:

               (i)  The  Trustee   need  perform  only  those  duties  that  are
                    specifically set forth in this Indenture and no others.

               (ii) In the  absence of bad faith on its part,  the  Trustee  may
                    conclusively rely, as to the truth of the statements and the
                    correctness  of  the  opinions   expressed   therein,   upon
                    Officers'  Certificates or Opinions of Counsel  furnished to
                    the  Trustee  and  conforming  to the  requirements  of this
                    Indenture;  however,  in  the  case  of any  such  Officers'
                    Certificates  or Opinions of Counsel which by any provisions
                    hereof are  specifically  required  to be  furnished  to the
                    Trustee,   the  Trustee   shall   examine   such   Officers'
                    Certificates and Opinions of Counsel to determine whether or
                    not they conform to the requirements of this Indenture.

          (c)  The  Trustee  may  not be  relieved  from  liability  for its own
               negligent  action,  its own  negligent  failure to act or its own
               willful misconduct, except that:

               (i)  This paragraph does not limit the effect of paragraph (b) of
                    this Section.

               (ii) The  Trustee  shall not be liable for any error of  judgment
                    made in good faith by a  Responsible  Officer,  unless it is
                    proved that the Trustee was  negligent in  ascertaining  the
                    pertinent facts.

               (iii) The Trustee  shall not be liable with respect to any action
                    taken, suffered or omitted to be taken by it with respect to
                    Securities  of any Series in good faith in  accordance  with
                    the  direction  of the  Holders of a majority  in  principal
                    amount of the outstanding Securities of such Series relating
                    to the time,  method and place of conducting  any proceeding
                    for any remedy  available to the Trustee,  or exercising any
                    trust  or  power  conferred  upon the  Trustee,  under  this
                    Indenture with respect to the Securities of such Series.

          (d)  Every  provision of this Indenture that in any way relates to the
               Trustee is subject to paragraph (a), (b) and (c) of this Section.

          (e)  The Trustee may refuse to perform any duty or exercise  any right
               or power unless it receives indemnity  satisfactory to it against
               any loss, liability or expense.

          (f)  The  Trustee  shall  not be  liable  for  interest  on any  money
               received by it except as the  Trustee  may agree in writing  with
               the  Company.  Money  held in  trust by the  Trustee  need not be
               segregated from other funds except to the extent required by law.


                                       27


          (g)  No provision of this Indenture  shall require the Trustee to risk
               its own funds or otherwise  incur any financial  liability in the
               performance  of any of its duties,  or in the  exercise of any of
               its rights or powers,  if it shall have  reasonable  grounds  for
               believing  that  repayment  of such funds or  adequate  indemnity
               against such risk is not reasonably assured to it.

          (h)  The Paying  Agent,  the Registrar  and any  authenticating  agent
               shall be entitled to the  protections  and  immunities as are set
               forth in paragraphs (a), (b) and (c) of this Section with respect
               to the Trustee.

Section 7.2.      Rights of Trustee.

          (a)  The  Trustee  may rely on and  shall be  protected  in  acting or
               refraining  from  acting upon any  document  believed by it to be
               genuine  and to have  been  signed  or  presented  by the  proper
               person.  The  Trustee  need not  investigate  any fact or  matter
               stated in the document.

          (b)  Before the Trustee acts or refrains  from acting,  it may require
               an Officers'  Certificate  or an Opinion of Counsel.  The Trustee
               shall not be liable  for any  action it takes or omits to take in
               good faith in reliance on such  Officers'  Certificate or Opinion
               of Counsel.

          (c)  The Trustee may act through  agents and shall not be  responsible
               for the misconduct or negligence of any agent  appointed with due
               care. No  Depository  shall be deemed an agent of the Trustee and
               the Trustee shall not be  responsible  for any act or omission by
               any Depository.

          (d)  The Trustee  shall not be liable for any action it takes or omits
               to take in good  faith  which it  believes  to be  authorized  or
               within its rights or powers.

          (e)  The  Trustee  may  consult  with  counsel  and the advice of such
               counsel  or any  Opinion of  Counsel  shall be full and  complete
               authorization  and  protection  in respect  of any action  taken,
               suffered or omitted by it hereunder in good faith and in reliance
               thereon.

          (f)  The Trustee  shall be under no  obligation to exercise any of the
               rights or powers vested in it by this Indenture at the request or
               direction of any of the Holders of Securities unless such Holders
               shall  have  offered  to  the  Trustee  reasonable   security  or
               indemnity against the costs, expenses and liabilities which might
               be incurred by it in compliance with such request or direction.

Section 7.3.      Individual Rights of Trustee.

                  The Trustee in its individual or any other capacity may become
the owner or pledgee of Securities and may otherwise deal with the Company or an
Affiliate with the same rights it would have if it were not Trustee. Any Agent
may do the same with like rights. The Trustee is also subject to Sections 7.10
and 7.11.

Section 7.4.      Trustee's Disclaimer.


                                       28


                  The Trustee makes no representation as to the validity or
adequacy of this Indenture or the Securities, it shall not be accountable for
the Company's use of the proceeds from the Securities, and it shall not be
responsible for any statement in the Securities other than its authentication.

Section 7.5.      Notice of Defaults.

                  If a Default or Event of Default occurs and is continuing with
respect to the Securities of any Series and if it is known to a Responsible
Officer of the Trustee, the Trustee shall mail to each Securityholder of the
Securities of that Series and, if any Bearer Securities are outstanding, publish
on one occasion in an Authorized Newspaper, notice of a Default or Event of
Default within 90 days after it occurs or, if later, after a Responsible Officer
of the Trustee has knowledge of such Default or Event of Default. Except in the
case of a Default or Event of Default in payment of principal of or interest on
any Security of any Series, the Trustee may withhold the notice if and so long
as its corporate trust committee or a committee of its Responsible Officers in
good faith determines that withholding the notice is in the interests of
Securityholders of that Series.

Section 7.6.      Reports by Trustee to Holders.

                  Within 60 days after May 15 in each year, the Trustee shall
transmit by mail to all Securityholders, as their names and addresses appear on
the register kept by the Registrar and, if any Bearer Securities are
outstanding, publish in an Authorized Newspaper, a brief report dated as of such
May 15, in accordance with, and to the extent required under, TIA Section 313.

                  A copy of each report at the time of its mailing to
Securityholders of any Series shall be filed with the SEC and each stock
exchange on which the Securities of that Series are listed. The Company shall
promptly notify the Trustee when Securities of any Series are listed on any
stock exchange.

Section 7.7.      Compensation and Indemnity.

                  The Company shall pay to the Trustee from time to time
reasonable compensation for its services. The Trustee's compensation shall not
be limited by any law on compensation of a trustee of an express trust. The
Company shall reimburse the Trustee upon request for all reasonable
out-of-pocket expenses incurred by it. Such expenses shall include the
reasonable compensation and expenses of the Trustee's agents and counsel.

                  The Company shall indemnify the Trustee (including the cost of
defending itself) against any loss, liability or expense incurred by it except
as set forth in the next paragraph in the performance of its duties under this
Indenture as Trustee or Agent. The Trustee shall notify the Company promptly of
any claim for which it may seek indemnity. The Company shall defend the claim
and the Trustee shall cooperate in the defense. The Trustee may have separate
counsel and the Company shall pay the reasonable fees and expenses of such
counsel. The Company need not pay for any settlement made without its consent,
which consent shall not be unreasonably withheld. This indemnification shall
apply to officers, directors, employees, shareholders and agents of the Trustee.


                                       29


                  The Company need not reimburse any expense or indemnify
against any loss or liability incurred by the Trustee or by any officer,
director, employee, shareholder or agent of the Trustee through negligence or
bad faith.

                  To secure the Company's payment obligations in this Section,
the Trustee shall have a lien prior to the Securities of any Series on all money
or property held or collected by the Trustee, except that held in trust to pay
principal and interest on particular Securities of that Series.

                  When the Trustee incurs expenses or renders services after an
Event of Default specified in Section 6.1(e) or (f) occurs, the expenses and the
compensation for the services are intended to constitute expenses of
administration under any Bankruptcy Law.

Section 7.8.      Replacement of Trustee.

                  A resignation or removal of the Trustee and appointment of a
successor Trustee shall become effective only upon the successor Trustee's
acceptance of appointment as provided in this Section.

                  The Trustee may resign with respect to the Securities of one
or more Series by so notifying the Company. The Holders of a majority in
principal amount of the Securities of any Series may remove the Trustee with
respect to that Series by so notifying the Trustee and the Company. The Company
may remove the Trustee with respect to Securities of one or more Series if:

          (a)  the Trustee fails to comply with Section 7.10;

          (b)  the Trustee is adjudged a bankrupt  or an  insolvent  or an order
               for  relief is entered  with  respect  to the  Trustee  under any
               Bankruptcy Law;

          (c)  a Custodian or public  officer takes charge of the Trustee or its
               property; or

          (d)  the Trustee becomes incapable of acting.

                  If the Trustee resigns or is removed or if a vacancy exists in
the office of Trustee for any reason, the Company shall promptly appoint a
successor Trustee. Within one year after the successor Trustee takes office, the
Holders of a majority in principal amount of the then outstanding Securities may
appoint a successor Trustee to replace the successor Trustee appointed by the
Company.

                  If a successor Trustee with respect to the Securities of any
one or more Series does not take office within 60 days after the retiring
Trustee resigns or is removed, the retiring Trustee, the Company or the Holders
of at least 10% in principal amount of the Securities of the applicable Series
may petition any court of competent jurisdiction for the appointment of a
successor Trustee.


                                       30


                  If the Trustee with respect to the Securities of any one or
more Series fails to comply with Section 7.10, any Securityholder of the
applicable Series may petition any court of competent jurisdiction for the
removal of the Trustee and the appointment of a successor Trustee.

                  A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Immediately after that,
the retiring Trustee shall transfer all property held by it as Trustee to the
successor Trustee subject to the lien provided for in Section 7.7, the
resignation or removal of the retiring Trustee shall become effective, and the
successor Trustee shall have all the rights, powers and duties of the Trustee
with respect to each Series of Securities for which it is acting as Trustee
under this Indenture. A successor Trustee shall mail a notice of its succession
to each Securityholder of each such Series and, if any Bearer Securities are
outstanding, publish such notice on one occasion in an Authorized Newspaper.
Notwithstanding replacement of the Trustee pursuant to this Section 7.8, the
Company's obligations under Section 7.7 hereof shall continue for the benefit of
the retiring trustee with respect to expenses and liabilities incurred by it
prior to such replacement.

Section 7.9.      Successor Trustee by Merger, Etc.

                  If the Trustee consolidates with, merges or converts into, or
transfers all or substantially all of its corporate trust business to, another
corporation, the successor corporation without any further act shall be the
successor Trustee.

Section 7.10.     Eligibility; Disqualification.

                  This Indenture shall always have a Trustee who satisfies the
requirements of TIA Section 310(a)(1), (2) and (5). The Trustee shall always
have a combined capital and surplus of at least $25,000,000 as set forth in its
most recent published annual report of condition. The Trustee shall comply with
TIA Section 310(b).

Section 7.11.     Preferential Collection of Claims Against Company.

                  The Trustee is subject to TIA Section 311(a), excluding any
creditor relationship listed in TIA Section 311(b). A Trustee who has resigned
or been removed shall be subject to TIA Section 311(a) to the extent indicated.

                                 ARTICLE VIII.
                     SATISFACTION AND DISCHARGE; DEFEASANCE

Section 8.1.      Satisfaction and Discharge of Indenture.

                  This Indenture shall upon Company Order cease to be of further
effect (except as hereinafter provided in this Section 8.1), and the Trustee, at
the expense of the Company, shall execute proper instruments acknowledging
satisfaction and discharge of this Indenture, when

          (a)  either


                                       31


               (i)  all  Securities  theretofore   authenticated  and  delivered
                    (other than  Securities  that have been  destroyed,  lost or
                    stolen  and that  have  been  replaced  or paid)  have  been
                    delivered to the Trustee for cancellation; or

               (ii) all such Securities not theretofore delivered to the Trustee
                    for cancellation

                    (1)  have become due and payable, or

                    (2)  will  become due and payable at their  Stated  Maturity
                         within one year, or

                    (3)  are to be called for  redemption  within one year under
                         arrangements satisfactory to the Trustee for the giving
                         of notice of redemption by the Trustee in the name, and
                         at the expense, of the Company, or

                    (4)  are deemed paid and discharged pursuant to Section 8.3,
                         as applicable;

and the Company, in the case of (1), (2) or (3) above, has deposited or caused
to be deposited with the Trustee as trust funds in trust an amount sufficient
for the purpose of paying and discharging the entire indebtedness on such
Securities not theretofore delivered to the Trustee for cancellation, for
principal and interest to the date of such deposit (in the case of Securities
which have become due and payable on or prior to the date of such deposit) or to
the Stated Maturity or redemption date, as the case may be;

          (b)  the Company has paid or caused to be paid all other sums  payable
               hereunder by the Company; and

          (c)  the Company has delivered to the Trustee an Officers' Certificate
               and an Opinion  of  Counsel,  each  stating  that all  conditions
               precedent  herein provided for relating to the  satisfaction  and
               discharge of this Indenture have been complied with.

                  Notwithstanding the satisfaction and discharge of this
Indenture, the obligations of the Company to the Trustee under Section 7.7, and,
if money shall have been deposited with the Trustee pursuant to clause (a) of
this Section, the provisions of Sections 2.4, 2.7, 2.8, 8.1, 8.2 and 8.5 shall
survive.

Section 8.2.      Application of Trust Funds; Indemnification.

          (a)  Subject to the  provisions  of Section 8.5,  all money  deposited
               with the  Trustee  pursuant  to Section  8.1,  all money and U.S.
               Government   Obligations   or  Foreign   Government   Obligations
               deposited with the Trustee pursuant to Section 8.3 or 8.4 and all
               money  received  by the  Trustee in  respect  of U.S.  Government
               Obligations or Foreign Government  Obligations deposited with the
               Trustee  pursuant to Section  8.3 or 8.4,  shall be held in trust
               and  applied  by it, in  accordance  with the  provisions  of the
               Securities and this Indenture, to the payment, either directly or


                                       32


               through any Paying Agent (including the Company acting as its own
               Paying  Agent)  as the  Trustee  may  determine,  to the  persons
               entitled thereto, of the principal and interest for whose payment
               such money has been  deposited with or received by the Trustee or
               to make mandatory sinking fund payments or analogous  payments as
               contemplated by Sections 8.3 or 8.4.

          (b)  The Company shall pay and shall indemnify the Trustee against any
               tax,  fee or other  charge  imposed on or assessed  against  U.S.
               Government   Obligations   or  Foreign   Government   Obligations
               deposited  pursuant to Sections  8.3 or 8.4 or the  interest  and
               principal  received in respect of such obligations other than any
               payable by or on behalf of Holders.

          (c)  The Trustee shall deliver or pay to the Company from time to time
               upon Company Request any U.S.  Government  Obligations or Foreign
               Government  Obligations  or  money  held  by  it as  provided  in
               Sections  8.3  or  8.4  which,  in the  opinion  of a  nationally
               recognized  firm  of  independent  certified  public  accountants
               expressed  in a written  certification  thereof  delivered to the
               Trustee,  are then in excess of the  amount  thereof  which  then
               would have been  required  to be  deposited  for the  purpose for
               which such U.S.  Government  Obligations  or  Foreign  Government
               Obligations or money were  deposited or received.  This provision
               shall  not  authorize  the  sale  by  the  Trustee  of  any  U.S.
               Government  Obligations or Foreign  Government  Obligations  held
               under this Indenture.

Section 8.3.      Legal Defeasance of Securities of any Series.

                  Unless this Section 8.3 is otherwise specified pursuant to
Section 2.2.21 to be inapplicable to Securities of any Series, the Company shall
be deemed to have paid and discharged the entire indebtedness on all the
outstanding Securities of such Series on the 91st day after the date of the
deposit referred to in subparagraph (d) hereof, and the provisions of this
Indenture, as it relates to such outstanding Securities of such Series, shall no
longer be in effect (and the Trustee, at the expense of the Company, shall, at
Company Request, execute proper instruments acknowledging the same), except as
to:

          (a)  the rights of Holders of  Securities  of such  Series to receive,
               from the trust funds  described in subparagraph  (d) hereof,  (i)
               payment of the principal of and each  installment of principal of
               and interest on the outstanding  Securities of such Series on the
               Stated  Maturity of such principal or installment of principal or
               interest  and (ii) the  benefit  of any  mandatory  sinking  fund
               payments  applicable to the  Securities of such Series on the day
               on which such payments are due and payable in accordance with the
               terms of this Indenture and the Securities of such Series;

          (b)  the provisions of Sections 2.4, 2.7, 2.8, 8.2, 8.3 and 8.5; and

          (c)  the  rights,   powers,   trust  and  immunities  of  the  Trustee
               hereunder;

provided that, the following conditions shall have been satisfied:


                                       33


          (d)  the  Company  shall  have  deposited  or caused  to be  deposited
               irrevocably  with the  Trustee  as trust  funds in trust  for the
               purpose of making the following payments, specifically pledged as
               security for and  dedicated  solely to the benefit of the Holders
               of such  Securities  (i) in the case of Securities of such Series
               denominated  in Dollars,  cash in Dollars (or such other money or
               currencies  as shall then be legal  tender in the United  States)
               and/or  U.S.  Government  Obligations,  or  (ii)  in the  case of
               Securities  of such  Series  denominated  in a  Foreign  Currency
               (other  than  a  composite   currency),   money  and/or   Foreign
               Government Obligations, which through the payment of interest and
               principal in respect  thereof,  in  accordance  with their terms,
               will  provide  (and  without  reinvestment  and  assuming  no tax
               liability  will be imposed on such  Trustee),  not later than one
               day  before the due date of any  payment  of money,  an amount in
               cash, sufficient,  in the opinion of a nationally recognized firm
               of  independent  public   accountants   expressed  in  a  written
               certification  thereof  delivered  to the  Trustee,  to  pay  and
               discharge  each  installment  of principal  (including  mandatory
               sinking fund or analogous  payments) of and interest,  if any, on
               all the Securities of such Series on the dates such  installments
               of interest or principal are due;

          (e)  such  deposit  will not  result in a breach or  violation  of, or
               constitute a default under, this Indenture or any other agreement
               or  instrument  to which the Company is a party or by which it is
               bound;

          (f)  no Default or Event of Default with respect to the  Securities of
               such Series shall have  occurred and be continuing on the date of
               such  deposit or during  the period  ending on the 91st day after
               such date;

          (g)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  and an Opinion of Counsel to the effect that (i) the
               Company has received  from,  or there has been  published by, the
               Internal  Revenue  Service  a ruling,  or (ii)  since the date of
               execution  of this  Indenture,  there  has been a  change  in the
               applicable  Federal  income tax law, in either case to the effect
               that,  and based  thereon such Opinion of Counsel  shall  confirm
               that,  the  Holders of the  Securities  of such  Series  will not
               recognize income, gain or loss for Federal income tax purposes as
               a result of such  deposit,  defeasance  and discharge and will be
               subject to Federal  income tax on the same amount and in the same
               manner  and at the same times as would have been the case if such
               deposit, defeasance and discharge had not occurred;

          (h)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  stating that the deposit was not made by the Company
               with the intent of  preferring  the Holders of the  Securities of
               such Series over any other  creditors  of the company or with the
               intent of defeating,  hindering, delaying or defrauding any other
               creditors of the Company;

          (i)  such  deposit  shall not  result in the trust  arising  from such
               deposit  constituting  an  investment  company (as defined in the
               Investment Company Act of 1940, as amended),  or such trust shall
               be qualified under such Act or exempt from regulation thereunder;
               and


                                       34


          (j)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  and an Opinion of  Counsel,  each  stating  that all
               conditions  precedent  provided  for  relating to the  defeasance
               contemplated by this Section have been complied with.

Section 8.4.      Covenant Defeasance.

                  Unless this Section 8.4 is otherwise specified pursuant to
Section 2.2.21 to be inapplicable to Securities of any Series, on and after the
91st day after the date of the deposit referred to in subparagraph (a) hereof,
the Company may omit to comply with any term, provision or condition set forth
under Sections 4.2, 4.3, 4.4, 4.5, 4.6, and 5.1 as well as any additional
covenants contained in a supplemental indenture hereto for a particular Series
of Securities or a Board Resolution or an Officers' Certificate delivered
pursuant to Section 2.2.21 (and the failure to comply with any such covenants
shall not constitute a Default or Event of Default under Section 6.1) and the
occurrence of any event described in clause (e) of Section 6.1 shall not
constitute a Default or Event of Default hereunder, with respect to the
Securities of such Series, provided that the following conditions shall have
been satisfied:

          (a)  With  reference to this Section 8.4, the Company has deposited or
               caused to be irrevocably deposited (except as provided in Section
               8.2(c))  with the Trustee as trust  funds in trust,  specifically
               pledged as security for, and dedicated  solely to, the benefit of
               the Holders of such  Securities  (i) in the case of Securities of
               such  Series  denominated  in  Dollars,  cash in Dollars (or such
               other money or  currencies  as shall then be legal  tender in the
               United States) and/or U.S. Government Obligations, or (ii) in the
               case  of  Securities  of such  Series  denominated  in a  Foreign
               Currency (other than a composite currency),  money and/or Foreign
               Government Obligations, which through the payment of interest and
               principal in respect  thereof,  in  accordance  with their terms,
               will  provide  (and  without  reinvestment  and  assuming  no tax
               liability  will be imposed on such  Trustee),  not later than one
               day  before the due date of any  payment  of money,  an amount in
               cash, sufficient,  in the opinion of a nationally recognized firm
               of  independent  certified  public  accountants  expressed  in  a
               written  certification  thereof delivered to the Trustee,  to pay
               principal and interest, if any, on and any mandatory sinking fund
               in respect  of the  Securities  of such  Series on the dates such
               installments of interest or principal are due;

          (b)  Such  deposit  will not  result in a breach or  violation  of, or
               constitute a default under, this Indenture or any other agreement
               or  instrument  to which the Company is a party or by which it is
               bound;

          (c)  No Default or Event of Default with respect to the  Securities of
               such Series shall have  occurred and be continuing on the date of
               such  deposit or during  the period  ending on the 91st day after
               such date;

          (d)  the  Company  shall have  delivered  to the Trustee an Opinion of
               Counsel  confirming that Holders of the Securities of such Series
               will not recognize  income,  gain or loss for federal  income tax
               purposes as a result of such deposit and  defeasance  and will be
               subject to federal  income tax on the same  amounts,  in the same
               manner  and at the same times as would have been the case if such
               deposit and defeasance had not occurred;


                                       35


          (e)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  stating the deposit was not made by the Company with
               the intent of  preferring  the Holders of the  Securities of such
               Series over any other creditors of the Company or with the intent
               of  defeating,   hindering,  delaying  or  defrauding  any  other
               creditors of the Company; and

          (f)  The Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  and an Opinion of  Counsel,  each  stating  that all
               conditions   precedent   herein  provided  for  relating  to  the
               defeasance contemplated by this Section have been complied with.

Section 8.5.      Repayment to Company.

                  The Trustee and the Paying Agent shall pay to the Company upon
request any money held by them for the payment of principal and interest that
remains unclaimed for two years. After that, Securityholders entitled to the
money must look to the Company for payment as general creditors unless an
applicable abandoned property law designates another person.

Section 8.6.      Reinstatement.

                  If the Trustee or Paying Agent is unable to apply any money or
U.S. Government Obligations in accordance with Sections 8.1, 8.3 or 8.4, as the
case may be, by reason of any legal proceeding or by reason of any order or
judgment of any court or governmental authority enjoining, restraining or
otherwise prohibiting such application, the Company's obligations under this
Indenture and the Securities shall be revived and reinstated as though no
deposit had occurred pursuant to Section 8.1, 8.3 or 8.4, as the case may be,
until such time as the Trustee or Paying Agent is permitted to apply all such
money or U.S. Government Obligations in accordance with Section 8.1, 8.3 or 8.4,
as the case may be; provided, however, that if the Company makes any payment of
principal of, premium, if any, or interest on any Securities because of
reinstatement of its obligations, the Company shall be subrogated to the rights
of the holders of such Securities to receive such payment from the money or U.S.
Government Obligations held by the Trustee or Paying Agent.

                                  ARTICLE IX.
                             AMENDMENTS AND WAIVERS

Section 9.1.      Without Consent of Holders.

                  The Company and the Trustee may amend or supplement this
Indenture or the Securities of one or more Series without the consent of any
Securityholder:

          (a)  to cure any ambiguity, defect or inconsistency;

          (b)  to comply with Article V;

          (c)  to provide  for  uncertificated  Securities  in addition to or in
               place of certificated Securities;


                                       36


          (d)  to make any change that does not  adversely  affect the rights of
               any Securityholder;

          (e)  to provide for the issuance of and  establish  the form and terms
               and  conditions  of Securities of any Series as permitted by this
               Indenture;

          (f)  to  evidence  and  provide  for  the  acceptance  of  appointment
               hereunder by a successor  Trustee with respect to the  Securities
               of one  or  more  Series  and  to  add  to or  change  any of the
               provisions of this Indenture as shall be necessary to provide for
               or facilitate the  administration of the trusts hereunder by more
               than one Trustee; or

          (g)  to  comply  with  requirements  of the SEC in order to  effect or
               maintain the qualification of this Indenture under the TIA.

Section 9.2.      With Consent of Holders.

                  The Company and the Trustee may enter into a supplemental
indenture with the written consent of the Holders of at least a majority in
principal amount of the outstanding Securities of each Series affected by such
supplemental indenture (including consents obtained in connection with a tender
offer or exchange offer for the Securities of such Series), for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of any supplemental indenture or of modifying in
any manner the rights of the Securityholders of each such Series. Except as
provided in Section 6.13, the Holders of at least a majority in principal amount
of the outstanding Securities of each Series affected by such waiver by notice
to the Trustee (including consents obtained in connection with a tender offer or
exchange offer for the Securities of such Series) may waive compliance by the
Company with any provision of this Indenture or the Securities with respect to
such Series.

                  It shall not be necessary for the consent of the Holders of
Securities under this Section 9.2 to approve the particular form of any proposed
supplemental indenture or waiver, but it shall be sufficient if such consent
approves the substance thereof. After a supplemental indenture or waiver under
this section becomes effective, the Company shall mail to the Holders of
Securities affected thereby and, if any Bearer Securities affected thereby are
outstanding, publish on one occasion in an Authorized Newspaper, a notice
briefly describing the supplemental indenture or waiver. Any failure by the
Company to mail or publish such notice, or any defect therein, shall not,
however, in any way impair or affect the validity of any such supplemental
indenture or waiver.

Section 9.3.      Limitations.

                  Without the consent of each Securityholder affected, an
amendment or waiver may not:

          (a)  change the amount of Securities  whose Holders must consent to an
               amendment, supplement or waiver;

          (b)  reduce  the rate of or extend the time for  payment  of  interest
               (including default interest) on any Security;


                                       37


          (c)  reduce  the  principal  or  change  the  Stated  Maturity  of any
               Security or reduce the amount of, or postpone the date fixed for,
               the payment of any sinking fund or analogous obligation;

          (d)  reduce the principal amount of Discount  Securities  payable upon
               acceleration of the maturity thereof;

          (e)  waive a  Default  or  Event  of  Default  in the  payment  of the
               principal  of or  interest,  if any,  on any  Security  (except a
               rescission of acceleration of the Securities of any Series by the
               Holders  of at  least  a  majority  in  principal  amount  of the
               outstanding Securities of such Series and a waiver of the payment
               default that resulted from such acceleration);

          (f)  make  the  principal  of or  interest,  if any,  on any  Security
               payable in any currency other than that stated in the Security;

          (g)  make any change in Sections 6.8, 6.13, 9.3 (this sentence), 10.15
               or 10.16; or

          (h)  waive a redemption payment with respect to any Security or change
               any of the  provisions  with  respect  to the  redemption  of any
               Securities.

Section 9.4.      Compliance with Trust Indenture Act.

                  Every amendment to this Indenture or the Securities of one or
more Series shall be set forth in a supplemental indenture hereto that complies
with the TIA as then in effect.

Section 9.5.      Revocation and Effect of Consents.

                  Until an amendment or waiver becomes effective, a consent to
it by a Holder of a Security is a continuing consent by the Holder and every
subsequent Holder of a Security or portion of a Security that evidences the same
debt as the consenting Holder's Security, even if notation of the consent is not
made on any Security. However, any such Holder or subsequent Holder may revoke
the consent as to his Security or portion of a Security if the Trustee receives
the notice of revocation before the date the amendment or waiver becomes
effective.

                  Any amendment or waiver once effective shall bind every
Securityholder of each Series affected by such amendment or waiver unless it is
of the type described in any of clauses (a) through (g) of Section 9.3. In that
case, the amendment or waiver shall bind each Holder of a Security who has
consented to it and every subsequent Holder of a Security or portion of a
Security that evidences the same debt as the consenting Holder's Security.

Section 9.6.      Notation on or Exchange of Securities.

                  The Trustee may place an appropriate notation about an
amendment or waiver on any Security of any Series thereafter authenticated. The
Company in exchange for Securities of that Series may issue and the Trustee
shall authenticate upon request new Securities of that Series that reflect the
amendment or waiver.


                                       38


Section 9.7.      Trustee Protected.

                  In executing, or accepting the additional trusts created by,
any supplemental indenture permitted by this Article or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and (subject to Section 7.1) shall be fully protected in relying
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture. The Trustee shall sign
all supplemental indentures, except that the Trustee need not sign any
supplemental indenture that adversely affects its rights.

                                   ARTICLE X.
                                  MISCELLANEOUS

Section 10.1.     Trust Indenture Act Controls.

                  If any provision of this Indenture limits, qualifies, or
conflicts with another provision which is required or deemed to be included in
this Indenture by the TIA, such required or deemed provision shall control.

Section 10.2.     Notices.

                  Any notice or communication by the Company or the Trustee to
the other is duly given if in writing and delivered in person or mailed by
first-class mail:

if to the Company:

                  Geron Corporation
                  230 Constitution Drive
                  Menlo Park, CA  94025
                  Attention: General Counsel

if to the Trustee:

                  [Name of Trustee]
                  [Address]
                  =======================
                  Attention: ______________

                  The Company or the Trustee by notice to the other may
designate additional or different addresses for subsequent notices or
communications.

                  Any notice or communication to a Securityholder shall be
mailed by first-class mail to his address shown on the register kept by the
Registrar and, if any Bearer Securities are outstanding, published in an
Authorized Newspaper. Failure to mail a notice or communication to a
Securityholder of any Series or any defect in it shall not affect its
sufficiency with respect to other Securityholders of that or any other Series.


                                       39


                  If a notice or communication is mailed or published in the
manner provided above, within the time prescribed, it is duly given, whether or
not the Securityholder receives it.

                  If the Company mails a notice or communication to
Securityholders, it shall mail a copy to the Trustee and each Agent at the same
time.

Section 10.3.     Communication by Holders with Other Holders.

                  Securityholders of any Series may communicate pursuant to TIA
Section 312(b) with other Securityholders of that Series or any other Series
with respect to their rights under this Indenture or the Securities of that
Series or all Series. The Company, the Trustee, the Registrar and anyone else
shall have the protection of TIA Section 312(c).

Section 10.4.     Certificate and Opinion as to Conditions Precedent.

                  Upon any request or application by the Company to the Trustee
to take any action under this Indenture, the Company shall furnish to the
Trustee:

          (a)  an  Officers'  Certificate  stating  that,  in the opinion of the
               signers, all conditions  precedent,  if any, provided for in this
               Indenture  relating to the  proposed  action  have been  complied
               with; and

          (b)  an  Opinion  of  Counsel  stating  that,  in the  opinion of such
               counsel, all such conditions precedent have been complied with.

Section 10.5.     Statements Required in Certificate or Opinion.

                  Each certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than a certificate
provided pursuant to TIA Section 314(a)(4)) shall comply with the provisions of
TIA Section 314(e) and shall include:

          (a)  a statement  that the person making such  certificate  or opinion
               has read such covenant or condition;

          (b)  a brief  statement as to the nature and scope of the  examination
               or investigation  upon which the statements or opinions contained
               in such certificate or opinion are based;

          (c)  a statement that, in the opinion of such person, he has made such
               examination  or  investigation  as is  necessary to enable him to
               express an informed opinion as to whether or not such covenant or
               condition has been complied with; and

          (d)  a statement  as to whether or not, in the opinion of such person,
               such condition or covenant has been complied with.


                                       40


Section 10.6.     Rules by Trustee and Agents.

                  The Trustee may make reasonable rules for action by or a
meeting of Securityholders of one or more Series. Any Agent may make reasonable
rules and set reasonable requirements for its functions.

Section 10.7.     Legal Holidays.

                  Unless otherwise provided by Board Resolution, Officers'
Certificate or supplemental indenture for a particular Series, a "Legal Holiday"
is any day that is not a Business Day. If a payment date is a Legal Holiday at a
place of payment, payment may be made at that place on the next succeeding day
that is not a Legal Holiday, and no interest shall accrue for the intervening
period.

Section 10.8.     No Recourse Against Others.

                  A director, officer, employee or stockholder, as such, of the
Company shall not have any liability for any obligations of the Company under
the Securities or the Indenture or for any claim based on, in respect of or by
reason of such obligations or their creation. Each Securityholder by accepting a
Security waives and releases all such liability. The waiver and release are part
of the consideration for the issue of the Securities.

Section 10.9.     Counterparts.

                  This Indenture may be executed in any number of counterparts
and by the parties hereto in separate counterparts, each of which when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same agreement.

Section 10.10.    Governing Laws.

                  THIS INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY THE
LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED
IN SUCH STATE, WITHOUT REGARD TO THE CONFLICT OF LAWS PROVISIONS THEREOF.

Section 10.11.    No Adverse Interpretation of Other Agreements.

                  This Indenture may not be used to interpret another indenture,
loan or debt agreement of the Company or a Subsidiary. Any such indenture, loan
or debt agreement may not be used to interpret this Indenture.

Section 10.12.    Successors.

                  All agreements of the Company in this Indenture and the
Securities shall bind its successor. All agreements of the Trustee in this
Indenture shall bind its successor.


                                       41


Section 10.13.    Severability.

                  In case any provision in this Indenture or in the Securities
shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

Section 10.14.    Table of Contents, Headings, Etc.

                  The Table of Contents, Cross Reference Table, and headings of
the Articles and Sections of this Indenture have been inserted for convenience
of reference only, are not to be considered a part hereof, and shall in no way
modify or restrict any of the terms or provisions hereof.

Section 10.15.    Securities in a Foreign Currency or in ECU.

                  Unless otherwise specified in a Board Resolution, a
supplemental indenture hereto or an Officers' Certificate delivered pursuant to
Section 2.2 of this Indenture with respect to a particular Series of Securities,
whenever for purposes of this Indenture any action may be taken by the Holders
of a specified percentage in aggregate principal amount of Securities of all
Series or all Series affected by a particular action at the time outstanding
and, at such time, there are outstanding Securities of any Series which are
denominated in a coin or currency other than Dollars (including ECUs), then the
principal amount of Securities of such Series which shall be deemed to be
outstanding for the purpose of taking such action shall be that amount of
Dollars that could be obtained for such amount at the Market Exchange Rate at
such time. For purposes of this Section 10.15, "Market Exchange Rate" shall mean
the noon Dollar buying rate in New York City for cable transfers of that
currency as published by the Federal Reserve Bank of New York; provided,
however, in the case of ECUs, Market Exchange Rate shall mean the rate of
exchange determined by the Commission of the European Union (or any successor
thereto) as published in the Official Journal of the European Union (such
publication or any successor publication, the "Journal"). If such Market
Exchange Rate is not available for any reason with respect to such currency, the
Trustee shall use, in its sole discretion and without liability on its part,
such quotation of the Federal Reserve Bank of New York or, in the case of ECUs,
the rate of exchange as published in the Journal, as of the most recent
available date, or quotations or, in the case of ECUs, rates of exchange from
one or more major banks in The City of New York or in the country of issue of
the currency in question or, in the case of ECUs, in Luxembourg or such other
quotations or, in the case of ECUs, rates of exchange as the Trustee, upon
consultation with the Company, shall deem appropriate. The provisions of this
paragraph shall apply in determining the equivalent principal amount in respect
of Securities of a Series denominated in currency other than Dollars in
connection with any action taken by Holders of Securities pursuant to the terms
of this Indenture.

                  All decisions and determinations of the Trustee regarding the
Market Exchange Rate or any alternative determination provided for in the
preceding paragraph shall be in its sole discretion and shall, in the absence of
manifest error, be conclusive to the extent permitted by law for all purposes
and irrevocably binding upon the Company and all Holders.


                                       42


Section 10.16.    Judgment Currency.

                  The Company agrees, to the fullest extent that it may
effectively do so under applicable law, that (a) if for the purpose of obtaining
judgment in any court it is necessary to convert the sum due in respect of the
principal of or interest or other amount on the Securities of any Series (the
"Required Currency") into a currency in which a judgment will be rendered (the
"Judgment Currency"), the rate of exchange used shall be the rate at which in
accordance with normal banking procedures the Trustee could purchase in The City
of New York the Required Currency with the Judgment Currency on the day on which
final unappealable judgment is entered, unless such day is not a New York
Banking Day, then, the rate of exchange used shall be the rate at which in
accordance with normal banking procedures the Trustee could purchase in The City
of New York the Required Currency with the Judgment Currency on the New York
Banking Day preceding the day on which final unappealable judgment is entered
and (b) its obligations under this Indenture to make payments in the Required
Currency (i) shall not be discharged or satisfied by any tender, any recovery
pursuant to any judgment (whether or not entered in accordance with subsection
(a)), in any currency other than the Required Currency, except to the extent
that such tender or recovery shall result in the actual receipt, by the payee,
of the full amount of the Required Currency expressed to be payable in respect
of such payments, (ii) shall be enforceable as an alternative or additional
cause of action for the purpose of recovering in the Required Currency the
amount, if any, by which such actual receipt shall fall short of the full amount
of the Required Currency so expressed to be payable, and (iii) shall not be
affected by judgment being obtained for any other sum due under this Indenture.
For purposes of the foregoing, "New York Banking Day" means any day except a
Saturday, Sunday or a legal holiday in The City of New York on which banking
institutions are authorized or required by law, regulation or executive order to
close.

                                  ARTICLE XI.
                                  SINKING FUNDS

Section 11.1.     Applicability of Article.

                  The provisions of this Article shall be applicable to any
sinking fund for the retirement of the Securities of a Series, except as
otherwise permitted or required by any form of Security of such Series issued
pursuant to this Indenture.

                  The minimum amount of any sinking fund payment provided for by
the terms of the Securities of any Series is herein referred to as a "mandatory
sinking fund payment" and any other amount provided for by the terms of
Securities of such Series is herein referred to as an "optional sinking fund
payment." If provided for by the terms of Securities of any Series, the cash
amount of any sinking fund payment may be subject to reduction as provided in
Section 11.2. Each sinking fund payment shall be applied to the redemption of
Securities of any Series as provided for by the terms of the Securities of such
Series.


                                       43


Section 11.2.     Satisfaction of Sinking Fund Payments with Securities.

                  The Company may, in satisfaction of all or any part of any
sinking fund payment with respect to the Securities of any Series to be made
pursuant to the terms of such Securities (1) deliver outstanding Securities of
such Series to which such sinking fund payment is applicable (other than any of
such Securities previously called for mandatory sinking fund redemption) and (2)
apply as credit Securities of such Series to which such sinking fund payment is
applicable and which have been redeemed either at the election of the Company
pursuant to the terms of such Series of Securities (except pursuant to any
mandatory sinking fund) or through the application of permitted optional sinking
fund payments or other optional redemptions pursuant to the terms of such
Securities, provided that such Securities have not been previously so credited.
Such Securities shall be received by the Trustee, together with an Officers'
Certificate with respect thereto, not later than 15 days prior to the date on
which the Trustee begins the process of selecting Securities for redemption, and
shall be credited for such purpose by the Trustee at the price specified in such
Securities for redemption through operation of the sinking fund and the amount
of such sinking fund payment shall be reduced accordingly. If as a result of the
delivery or credit of Securities in lieu of cash payments pursuant to this
Section 11.2, the principal amount of Securities of such Series to be redeemed
in order to exhaust the aforesaid cash payment shall be less than $100,000, the
Trustee need not call Securities of such Series for redemption, except upon
receipt of a Company Order that such action be taken, and such cash payment
shall be held by the Trustee or a Paying Agent and applied to the next
succeeding sinking fund payment, provided, however, that the Trustee or such
Paying Agent shall from time to time upon receipt of a Company Order pay over
and deliver to the Company any cash payment so being held by the Trustee or such
Paying Agent upon delivery by the Company to the Trustee of Securities of that
Series purchased by the Company having an unpaid principal amount equal to the
cash payment required to be released to the Company.

Section 11.3.     Redemption of Securities for Sinking Fund.

                  Not less than 45 days (unless otherwise indicated in the Board
Resolution, supplemental indenture hereto or Officers' Certificate in respect of
a particular Series of Securities) prior to each sinking fund payment date for
any Series of Securities, the Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing mandatory sinking fund
payment for that Series pursuant to the terms of that Series, the portion
thereof, if any, which is to be satisfied by payment of cash and the portion
thereof, if any, which is to be satisfied by delivering and crediting of
Securities of that Series pursuant to Section 11.2, and the optional amount, if
any, to be added in cash to the next ensuing mandatory sinking fund payment, and
the Company shall thereupon be obligated to pay the amount therein specified.
Not less than 30 days (unless otherwise indicated in the Board Resolution,
Officers' Certificate or supplemental indenture in respect of a particular
Series of Securities) before each such sinking fund payment date the Trustee
shall select the Securities to be redeemed upon such sinking fund payment date
in the manner specified in Section 3.2 and cause notice of the redemption
thereof to be given in the name of and at the expense of the Company in the
manner provided in Section 3.3. Such notice having been duly given, the
redemption of such Securities shall be made upon the terms and in the manner
stated in Sections 3.4, 3.5 and 3.6.


                                       44


                  IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed as of the day and year first above written.

                                          GERON CORPORATION


                                          By:
                                             -----------------------------------
                                             Name:
                                             Its:

                                          [Name of Trustee]

                                          By:
                                             -----------------------------------
                                             Name:
                                             Its:





                                                                     EXHIBIT 4.6


                  FORM OF INDENTURE TO BE ENTERED INTO BETWEEN
                      THE COMPANY AND A TRUSTEE TO BE NAMED






--------------------------------------------------------------------------------



                                GERON CORPORATION

                             ---------------------

                                    INDENTURE


                           Dated as of _________, 200_



                                [Name of Trustee]


                                     Trustee



--------------------------------------------------------------------------------



                                                                                                           

                                TABLE OF CONTENTS
                                                                                                               Page
                                                                                                               ----

ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE ........................................................... 1
         Section 1.1.      Definitions............................................................................1
         Section 1.2.      Other Definitions......................................................................6
         Section 1.3.      Incorporation by Reference of Trust Indenture Act......................................6
         Section 1.4.      Rules of Construction..................................................................7
ARTICLE II. THE SECURITIES........................................................................................7
         Section 2.1.      Issuable in Series.....................................................................7
         Section 2.2.      Establishment of Terms of Series of Securities.........................................8
         Section 2.3.      Execution and Authentication..........................................................10
         Section 2.4.      Registrar and Paying Agent............................................................11
         Section 2.5.      Paying Agent to Hold Money in Trust...................................................12
         Section 2.6.      Securityholder Lists..................................................................12
         Section 2.7.      Transfer and Exchange.................................................................12
         Section 2.8.      Mutilated, Destroyed, Lost and Stolen Securities......................................13
         Section 2.9.      Outstanding Securities................................................................13
         Section 2.10.     Treasury Securities...................................................................14
         Section 2.11.     Temporary Securities..................................................................14
         Section 2.12.     Cancellation..........................................................................14
         Section 2.13.     Defaulted Interest....................................................................14
         Section 2.14.     Global Securities.....................................................................15
         Section 2.15.     CUSIP Numbers.........................................................................16
ARTICLE III. REDEMPTION..........................................................................................16
         Section 3.1.      Notice to Trustee.....................................................................16
         Section 3.2.      Selection of Securities to be Redeemed................................................16
         Section 3.3.      Notice of Redemption..................................................................17
         Section 3.4.      Effect of Notice of Redemption........................................................17
         Section 3.5.      Deposit of Redemption Price...........................................................17
         Section 3.6.      Securities Redeemed in Part...........................................................18
ARTICLE IV. COVENANTS ...........................................................................................18
         Section 4.1.      Payment of Principal and Interest.....................................................18
         Section 4.2.      SEC Reports...........................................................................18
         Section 4.3.      Compliance Certificate................................................................18
         Section 4.4.      Stay, Extension and Usury Laws........................................................18
         Section 4.5.      Corporate Existence...................................................................19
         Section 4.6.      Taxes.................................................................................19
ARTICLE V. SUCCESSORS............................................................................................19
         Section 5.1.      When Company May Merge, Etc...........................................................19
         Section 5.2.      Successor Corporation Substituted.....................................................19
ARTICLE VI. DEFAULTS AND REMEDIES................................................................................20
         Section 6.1.      Events of Default.....................................................................20
         Section 6.2.      Acceleration of Maturity; Rescission and Annulment....................................21
         Section 6.3.      Collection of Indebtedness and Suits for Enforcement by Trustee.......................22
         Section 6.4.      Trustee May File Proofs of Claim......................................................23


                                       i



                                                                                                           

         Section 6.5.      Trustee May Enforce Claims Without Possession of Securities...........................23
         Section 6.6.      Application of Money Collected........................................................24
         Section 6.7.      Limitation on Suits...................................................................24
         Section 6.8.      Unconditional Right of Holders to Receive Principal and Interest......................25
         Section 6.9.      Restoration of Rights and Remedies....................................................25
         Section 6.10.     Rights and Remedies Cumulative........................................................25
         Section 6.11.     Delay or Omission Not Waiver..........................................................25
         Section 6.12.     Control by Holders....................................................................26
         Section 6.13.     Waiver of Past Defaults...............................................................26
         Section 6.14.     Undertaking for Costs.................................................................26
ARTICLE VII. TRUSTEE ............................................................................................27
         Section 7.1.      Duties of Trustee.....................................................................27
         Section 7.2.      Rights of Trustee.....................................................................29
         Section 7.3.      Individual Rights of Trustee..........................................................29
         Section 7.4.      Trustee's Disclaimer..................................................................29
         Section 7.5.      Notice of Defaults....................................................................29
         Section 7.6.      Reports by Trustee to Holders.........................................................29
         Section 7.7.      Compensation and Indemnity............................................................29
         Section 7.8.      Replacement of Trustee................................................................30
         Section 7.9.      Successor Trustee by Merger, Etc......................................................31
         Section 7.10.     Eligibility; Disqualification.........................................................31
         Section 7.11.     Preferential Collection of Claims Against Company.....................................31
ARTICLE VIII. SATISFACTION AND DISCHARGE; DEFEASANCE ............................................................32
         Section 8.1.      Satisfaction and Discharge of Indenture...............................................32
         Section 8.2.      Application of Trust Funds; Indemnification...........................................33
         Section 8.3.      Legal Defeasance of Securities of any Series..........................................33
         Section 8.4.      Covenant Defeasance...................................................................35
         Section 8.5.      Repayment to Company..................................................................36
         Section 8.6.      Reinstatement.........................................................................36
ARTICLE IX. AMENDMENTS AND WAIVERS ..............................................................................37
         Section 9.1.      Without Consent of Holders............................................................37
         Section 9.2.      With Consent of Holders...............................................................37
         Section 9.3.      Limitations...........................................................................38
         Section 9.4.      Compliance with Trust Indenture Act...................................................38
         Section 9.5.      Revocation and Effect of Consents.....................................................38
         Section 9.6.      Notation on or Exchange of Securities.................................................39
         Section 9.7.      Trustee Protected.....................................................................39
ARTICLE X. MISCELLANEOUS ........................................................................................39
         Section 10.1.     Trust Indenture Act Controls..........................................................39
         Section 10.2.     Notices...............................................................................39
         Section 10.3.     Communication by Holders with Other Holders...........................................40
         Section 10.4.     Certificate and Opinion as to Conditions Precedent....................................40
         Section 10.5.     Statements Required in Certificate or Opinion.........................................40
         Section 10.6.     Rules by Trustee and Agents...........................................................41
         Section 10.7.     Legal Holidays........................................................................41
         Section 10.8.     No Recourse Against Others............................................................41


                                       ii



                                                                                                           

         Section 10.9.     Counterparts..........................................................................41
         Section 10.10.    Governing Laws........................................................................41
         Section 10.11.    No Adverse Interpretation of Other Agreements.........................................41
         Section 10.12.    Successors............................................................................42
         Section 10.13.    Severability..........................................................................42
         Section 10.14.    Table of Contents, Headings, Etc......................................................42
         Section 10.15.    Securities in a Foreign Currency or in ECU............................................42
         Section 10.16.    Judgment Currency.....................................................................43
ARTICLE XI. SINKING FUNDS .......................................................................................43
         Section 11.1.     Applicability of Article..............................................................43
         Section 11.2.     Satisfaction of Sinking Fund Payments with Securities.................................44
         Section 11.3.     Redemption of Securities for Sinking Fund.............................................44
ARTICLE XII. SUBORDINATION OF SECURITIES ........................................................................45
         Section 12.1.     Agreement of Subordination............................................................45
         Section 12.2.     Payments to Holders...................................................................45
         Section 12.3.     Subrogation of Securities.............................................................48
         Section 12.4.     Authorization to Effect Subordination.................................................49
         Section 12.5.     Notice to Trustee.....................................................................49
         Section 12.6.     Trustee's Relation to Senior Indebtedness.............................................50
         Section 12.7.     No Impairment of Subordination........................................................50
         Section 12.8.     Article Applicable to Paying Agents...................................................50
         Section 12.9.     Senior Indebtedness Entitled to Rely..................................................50


                                      iii


                                GERON CORPORATION
         Reconciliation and tie between Trust Indenture Act of 1939 and
                     Indenture, dated as of _________, 200_


                                                                             

          Section 310(a)(1)  ...................................................      7.10
                     (a)(2)  ...................................................      7.10
                     (a)(3)  ...................................................      Not Applicable
                     (a)(4)  ...................................................      Not Applicable
                     (a)(5)  ...................................................      7.10
                        (b)  ...................................................      7.10
             Section 311(a)  ...................................................      7.11
                        (b)  ...................................................      7.11
                        (c)  ...................................................      Not Applicable
             Section 312(a)  ...................................................      2.6
                        (b)  ...................................................      10.3
                        (c)  ...................................................      10.3
             Section 313(a)  ...................................................      7.6
                     (b)(1)  ...................................................      7.6
                     (b)(2)  ...................................................      7.6
                     (c)(1)  ...................................................      7.6
                        (d)  ...................................................      7.6
             Section 314(a)  ...................................................      4.2, 10.5
                        (b)  ...................................................      Not Applicable
                     (c)(1)  ...................................................      10.4
                     (c)(2)  ...................................................      10.4
                     (c)(3)  ...................................................      Not Applicable
                        (d)  ...................................................      Not Applicable
                        (e)  ...................................................      10.5
                        (f)  ...................................................      Not Applicable
             Section 315(a)  ...................................................      7.1
                        (b)  ...................................................      7.5
                        (c)  ...................................................      7.1
                        (d)  ...................................................      7.1
                        (e)  ...................................................      6.14
             Section 316(a)  ...................................................      2.10
                  (a)(1)(A)  ...................................................      6.12
                  (a)(1)(B)  ...................................................      6.13
                        (b)  ...................................................      6.8
          Section 317(a)(1)  ...................................................      6.3
                     (a)(2)  ...................................................      6.4
                        (b)  ...................................................      2.5
             Section 318(a)  ...................................................      10.1


Note:    This reconciliation and tie shall not, for any purpose, be deemed to
be part of the Indenture.

                                       iv


                  Indenture dated as of ___________, 200_ between Geron
Corporation, a Delaware corporation ("Company"), and [Name of Trustee],
a ________________ ("Trustee").

                  Each party agrees as follows for the benefit of the other
party and for the equal and ratable benefit of the Holders of the Securities
issued under this Indenture.

                                   ARTICLE I
                   DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.1       Definitions.

                  "Additional Amounts" means any additional amounts which are
required hereby or by any Security, under circumstances specified herein or
therein, to be paid by the Company in respect of certain taxes imposed on
Holders specified therein and which are owing to such Holders.

                  "Affiliate" of any specified person means any other person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified person. For the purposes of this definition,
"control" (including, with correlative meanings, the terms "controlled by" and
"under common control with"), as used with respect to any person, shall mean the
possession, directly or indirectly, of the power to direct or cause the
direction of the management or policies of such person, whether through the
ownership of voting securities or by agreement or otherwise.

                  "Agent" means any Registrar, Paying Agent, Service Agent or
authenticating agent.

                  "Authorized Newspaper" means a newspaper in an official
language of the country of publication customarily published at least once a day
for at least five days in each calendar week and of general circulation in the
place in connection with which the term is used. If it shall be impractical to
make any publication of any notice required hereby in an Authorized Newspaper,
any publication or other notice in lieu thereof that is made or given by the
Trustee shall constitute a sufficient publication of such notice.

                  "Bearer" means anyone in possession from time to time of a
Bearer Security.

                  "Bearer Security" means any Security, including any interest
coupon appertaining thereto, that does not provide for the identification of the
Holder thereof.

                  "Board of Directors" means the Board of Directors of the
Company or any duly authorized committee thereof.

                  "Board Resolution" means a copy of a resolution certified by
the Secretary or an Assistant Secretary of the Company to have been adopted by
the Board of Directors or pursuant to authorization by the Board of Directors
and to be in full force and effect on the date of the certificate, and delivered
to the Trustee.

                                       1


                  "Business Day" means, unless otherwise provided by Board
Resolution, Officers' Certificate or supplemental indenture hereto for a
particular Series, any day except a Saturday, Sunday or a legal holiday in The
City of New York or The City of San Francisco on which banking institutions are
authorized or required by law, regulation or executive order to close.

                  "Company" means the party named as such above until a
successor replaces it and thereafter means the successor.

                  "Company Order" means a written order signed in the name of
the Company by two Officers, one of whom must be the Company's chief executive
officer, chief financial officer or principal accounting officer.

                  "Company Request" means a written request signed in the name
of the Company by its Chairman of the Board, a President or a Vice President,
and by its Treasurer, an Assistant Treasurer, its Secretary or an Assistant
Secretary, and delivered to the Trustee.

                  "Corporate Trust Office" means the office of the Trustee at
which at any particular time its corporate trust business shall be principally
administered.

                   "Debt" of any person as of any date means, without
duplication, all indebtedness of such person in respect of borrowed money,
including all interest, fees and expenses owed in respect thereto (whether or
not the recourse of the lender is to the whole of the assets of such person or
only to a portion thereof), or evidenced by bonds, notes, debentures or similar
instruments.

                  "Default" means any event which is, or after notice or passage
of time would be, an Event of Default.

                  "Depository" means, with respect to the Securities of any
Series issuable or issued in whole or in part in the form of one or more Global
Securities, the person designated as Depository for such Series by the Company,
which Depository shall be a clearing agency registered under the Exchange Act;
and if at any time there is more than one such person, "Depository" as used with
respect to the Securities of any Series shall mean the Depository with respect
to the Securities of such Series.

                  "Designated Senior Indebtedness" means any of our senior
indebtedness that expressly provides that it is "designated senior indebtedness"
for purposes of this Indenture (provided that the instrument, agreement or other
document creating or evidencing such Senior Indebtedness may place limitations
and conditions on the right of such Senior Indebtedness to exercise the rights
of Designated Senior Indebtedness).

                  "Discount Security" means any Security that provides for an
amount less than the stated principal amount thereof to be due and payable upon
declaration of acceleration of the maturity thereof pursuant to Section 6.2.

                  "Dollars" means the currency of The United States of America.


                                       2


                  "ECU" means the European Currency Unit as determined by the
Commission of the European Union.

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

                  "Foreign Currency" means any currency or currency unit issued
by a government other than the government of The United States of America.

                  "Foreign Government Obligations" means with respect to
Securities of any Series that are denominated in a Foreign Currency, (i) direct
obligations of the government that issued or caused to be issued such currency
for the payment of which obligations its full faith and credit is pledged or
(ii) obligations of a person controlled or supervised by or acting as an agency
or instrumentality of such government the timely payment of which is
unconditionally guaranteed as a full faith and credit obligation by such
government, which, in either case under clauses (i) or (ii), are not callable or
redeemable at the option of the issuer thereof.

                  "Global Security" or "Global Securities" means a Security or
Securities, as the case may be, in the form established pursuant to Section 2.2
evidencing all or part of a Series of Securities, issued to the Depository for
such Series or its nominee, and registered in the name of such Depository or
nominee.

                  "Holder" or "Securityholder" means a person in whose name a
Security is registered or the holder of a Bearer Security.

                  "indebtedness" means, with respect to any person, and without
duplication, (a) all indebtedness, obligations and other liabilities (contingent
or otherwise) of such person for borrowed money (including obligations of the
Company in respect of overdrafts, foreign exchange contracts, currency exchange
agreements, interest rate protection agreements, and any loans or advances from
banks, whether or not evidenced by notes or similar instruments) or evidenced by
bonds, debentures, notes or similar instruments (whether or not the recourse of
the lender is to the whole of the assets of such person or to only a portion
thereof) (other than any account payable or other accrued current liability or
obligation incurred in the ordinary course of business in connection with the
obtaining of materials or services), (b) all reimbursement obligations and other
liabilities (contingent or otherwise) of such person with respect to letters of
credit, bank guarantees or bankers' acceptances, (c) all obligations and
liabilities (contingent or otherwise) in respect of leases of such person
required, in conformity with generally accepted accounting principles, to be
accounted for as capitalized lease obligations on the balance sheet of such
person and all obligations and other liabilities (contingent or otherwise) under


                                       3


any lease or related document (including a purchase agreement) in connection
with the lease of real property which provides that such person is contractually
obligated to purchase or cause a third party to purchase the leased property and
thereby guarantee a minimum residual value of the leased property to the lessor
and the obligations of such person under such lease or related document to
purchase or to cause a third party to purchase such leased property, (d) all
obligations of such person (contingent or otherwise) with respect to an interest
rate or other swap, cap or collar agreement or other similar instrument or
agreement or foreign currency hedge, exchange, purchase or similar instrument or
agreement, (e) all direct or indirect guaranties or similar agreements by such
person in respect of, and obligations or liabilities (contingent or otherwise)
of such person to purchase or otherwise acquire or otherwise assure a creditor
against loss in respect of indebtedness, obligations or liabilities of another
person of the kind described in clauses (a) through (d), (f) any indebtedness or
other obligations described in clauses (a) through (e) secured by any mortgage,
pledge, lien or other encumbrance existing on property which is owned or held by
such person, regardless of whether the indebtedness or other obligation secured
thereby shall have been assumed by such person and (g) any and all refinancings,
replacements, deferrals, renewals, extensions and refundings of, or amendments,
modifications or supplements to, any indebtedness, obligation or liability of
the kind described in clauses (a) through (f).

                  "Indenture" means this Indenture as amended from time to time
and shall include the form and terms of particular Series of Securities
established as contemplated hereunder.

                  "interest" with respect to any Discount Security which by its
terms bears interest only after Maturity, means interest payable after Maturity.

                  "Maturity," when used with respect to any Security or
installment of principal thereof, means the date on which the principal of such
Security or such installment of principal becomes due and payable as therein or
herein provided, whether at the Stated Maturity or by declaration of
acceleration, call for redemption, notice of option to elect repayment or
otherwise.

                  "Officer" means the Chairman of the Board, any President, any
Vice-President, the Treasurer, the Secretary, any Assistant Treasurer or any
Assistant Secretary of the Company.

                  "Officers' Certificate" means a certificate signed by two
Officers, one of whom must be the Company's principal executive officer,
principal financial officer or principal accounting officer.

                   "Opinion of Counsel" means a written opinion of legal counsel
who is acceptable to the Trustee. The counsel may be an employee of or counsel
to the Company.

                  "person" means any individual, corporation, partnership, joint
venture, association, limited liability company, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

                  "principal" of a Security means the principal of the Security
plus, when appropriate, the premium, if any, on, and any Additional Amounts in
respect of, the Security.

                  "Representative" means the (a) indenture trustee or other
trustee, agent or representative for any Senior Indebtedness or (b) with respect
to any Senior Indebtedness that does not have any such trustee, agent or other
representative, (i) in the case of such Senior Indebtedness issued pursuant to
an agreement providing for voting arrangements as among the holders or owners of
such Senior Indebtedness, any holder or owner of such Senior Indebtedness acting
with the consent of the required persons necessary to bind such holders or
owners of such Senior Indebtedness and (ii) in the case of all other such Senior
Indebtedness, the holder or owner of such Senior Indebtedness.


                                       4


                  "Responsible Officer" means any officer of the Trustee in its
Corporate Trust Office and also means, with respect to a particular corporate
trust matter, any other officer to whom any corporate trust matter is referred
because of his or her knowledge of and familiarity with a particular subject.

                  "SEC" means the Securities and Exchange Commission.

                  "Securities" means the debentures, notes or other debt
instruments of the Company of any Series authenticated and delivered under this
Indenture.

                  "Senior Indebtedness" means the principal, premium, if any,
interest, including any interest accruing after bankruptcy, and rent or
termination payment on or other amounts due on our current or future
Indebtedness, whether created, incurred, assumed, guaranteed or in effect
guaranteed by us, including any deferrals, renewals, extensions, refundings,
amendments, modifications or supplements to the above. However, Senior
Indebtedness does not include: (i) Indebtedness that expressly provides that it
shall not be senior in right of payment to the Securities or expressly provides
that it is on the same basis or junior to the Securities; (ii) our indebtedness
to any of our majority-owned subsidiaries; and (iii) the Securities.

                  "Series" or "Series of Securities" means each series of
debentures, notes or other debt instruments of the Company created pursuant to
Sections 2.1 and 2.2 hereof.

                  "Significant Subsidiary" means (i) any direct or indirect
Subsidiary of the Company that would be a "significant subsidiary" as defined in
Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities
Act of 1933, as amended, as such regulation is in effect on the date hereof, or
(ii) any group of direct or indirect Subsidiaries of the Company that, taken
together as a group, would be a "significant subsidiary" as defined in Article
1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act of
1933, as amended, as such regulation is in effect on the date hereof.

                  "Stated Maturity" when used with respect to any Security or
any installment of principal thereof or interest thereon, means the date
specified in such Security as the fixed date on which the principal of such
Security or such installment of principal or interest is due and payable.

                  "Subsidiary" of any specified person means any corporation of
which at least a majority of the outstanding stock having by the terms thereof
ordinary voting power for the election of directors of such corporation
(irrespective of whether or not at the time stock of any other class or classes
of such corporation shall have or might have voting power by reason of the
happening of any contingency) is at the time directly or indirectly owned by
such person, or by one or more other Subsidiaries, or by such person and one or
more other Subsidiaries.

                  "TIA" means the Trust Indenture Act of 1939 (15 U.S. Code
Sections 77aaa-77bbbb) as in effect on the date of this Indenture; provided,
however, that in the event the Trust Indenture Act of 1939 is amended after such
date, "TIA" means, to the extent required by any such amendment, the Trust
Indenture Act as so amended.

                  "Trustee" means the person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each person who is then a Trustee hereunder, and
if at any time there is more than one such person, "Trustee" as used with
respect to the Securities of any Series shall mean the Trustee with respect to
Securities of that Series.


                                       5


                  "U.S. Government Obligations" means securities which are (i)
direct obligations of The United States of America for the payment of which its
full faith and credit is pledged or (ii) obligations of a person controlled or
supervised by and acting as an agency or instrumentality of The United States of
America the payment of which is unconditionally guaranteed as a full faith and
credit obligation by The United States of America, and which in the case of (i)
and (ii) are not callable or redeemable at the option of the issuer thereof, and
shall also include a depository receipt issued by a bank or trust company as
custodian with respect to any such U.S. Government Obligation or a specific
payment of interest on or principal of any such U.S. Government Obligation held
by such custodian for the account of the holder of a depository receipt,
provided that (except as required by law) such custodian is not authorized to
make any deduction from the amount payable to the holder of such depository
receipt from any amount received by the custodian in respect of the U.S.
Government Obligation evidenced by such depository receipt.

Section 1.2.......Other Definitions.

                                                              DEFINED IN
         TERM                                                   SECTION
         ----                                                 ----------
         "Bankruptcy Law"                                         6.1
         "Custodian"                                              6.1
         "Event of Default"                                       6.1
         "Journal"                                               10.15
         "Judgment Currency"                                     10.16
         "Legal Holiday"                                         10.7
         "mandatory sinking fund payment"                        11.1
         "Market Exchange Rate"                                  10.15
         "New York Banking Day"                                  10.16
         "optional sinking fund payment"                         11.1
         "Paying Agent"                                           2.4
         "Payment Blockage Notice"                               12.2
         "Registrar"                                              2.4
         "Required Currency"                                     10.16
         "Service Agent"                                          2.4
         "successor person"                                       5.1


Section 1.3       Incorporation by Reference of Trust Indenture Act.

                  Whenever this Indenture refers to a provision of the TIA, the
provision is incorporated by reference in and made a part of this Indenture. The
following TIA terms used in this Indenture have the following meanings:


                                       6


                  "Commission" means the SEC.

                  "indenture securities" means the Securities.

                  "indenture security holder" means a Securityholder.

                  "indenture to be qualified" means this Indenture.

                  "indenture trustee" or "institutional trustee" means the
                  Trustee.

                  "obligor" on the indenture securities means the Company and
any successor obligor upon the Securities.

                  All other terms used in this Indenture that are defined by the
TIA, defined by TIA reference to another statute or defined by SEC rule under
the TIA and not otherwise defined herein are used herein as so defined.

Section 1.4       Rules of Construction.

                  Unless the context otherwise requires:

          (a)  a term has the meaning assigned to it;

          (b)  an accounting term not otherwise defined has the meaning assigned
               to  it  in  accordance   with   generally   accepted   accounting
               principles;

          (c)  references to "generally  accepted  accounting  principles" shall
               mean generally accepted accounting principles in effect as of the
               time  when  and  for  the  period  as to  which  such  accounting
               principles are to be applied;

          (d)  "or" is not exclusive;

          (e)  words in the  singular  include  the  plural,  and in the  plural
               include the singular; and

          (f)  provisions apply to successive events and transactions.

                                  ARTICLE II.
                                 THE SECURITIES

Section 2.1.      Issuable in Series.

                  The aggregate principal amount of Securities that may be
authenticated and delivered under this Indenture is unlimited. The Securities
may be issued in one or more Series. All Securities of a Series shall be
identical except as may be set forth in a Board Resolution, a supplemental
indenture or an Officers' Certificate detailing the adoption of the terms
thereof pursuant to the authority granted under a Board Resolution. In the case
of Securities of a Series to be issued from time to time, the Board Resolution,
Officers' Certificate or supplemental indenture may provide for the method by
which specified terms (such as interest rate, maturity date, record date or date
from which interest shall accrue) are to be determined. Securities may differ
between Series in respect of any matters, provided that all Series of Securities
shall be equally and ratably entitled to the benefits of the Indenture but all
Securities issued hereunder shall be subordinate and junior in right of payment,
to the extent and in the manner set forth in Article XII, to all Senior
Indebtedness of the Company.


                                       7


Section 2.2.      Establishment of Terms of Series of Securities.

                  At or prior to the issuance of any Securities within a Series,
the following shall be established (as to the Series generally, in the case of
Subsection 2.2.1 and either as to such Securities within the Series or as to the
Series generally in the case of Subsections 2.2.2 through 2.2.22) by a Board
Resolution, a supplemental indenture or an Officers' Certificate pursuant to
authority granted under a Board Resolution:

          2.2.1. the title of the Series (which shall distinguish the Securities
of that particular Series from the Securities of any other Series);

          2.2.2. the price or prices (expressed as a percentage of the principal
amount thereof) at which the Securities of the Series will be issued;

          2.2.3. any limit upon the aggregate principal amount of the Securities
of the Series which may be authenticated and delivered under this Indenture
(except for Securities authenticated and delivered upon registration of
transfer of, or in exchange for, or in lieu of, other Securities of the Series
pursuant to Section 2.7, 2.8, 2.11, 3.6 or 9.6);

          2.2.4.  the date or dates on which the principal of the  Securities of
the Series is payable;

          2.2.5.  the rate or rates (which may be fixed or  variable)  per annum
or, if applicable, the method used to determine such rate or rates (including,
but not limited to, any commodity, commodity index, stock exchange index or
financial index) at which the Securities of the Series shall bear interest, if
any, the date or dates from which such interest, if any, shall accrue, the date
or dates on which such interest, if any, shall commence and be payable and any
regular record date for the interest payable on any interest payment date;

          2.2.6.  the place or places where the  principal of and  interest,  if
any, on the Securities of the Series shall be payable, or the method of such
payment, if by wire transfer, mail or other means;

          2.2.7. if applicable, the period or periods within which, the price or
prices at which and the terms and conditions upon which the Securities of the
Series may be redeemed, in whole or in part, at the option of the Company;

          2.2.8.  the  obligation,  if any, of the Company to redeem or purchase
the Securities of the Series pursuant to any sinking fund or analogous
provisions or at the option of a Holder thereof and the period or periods
within which, the price or prices at which and the terms and conditions upon
which Securities of the Series shall be redeemed or purchased, in whole or in
part, pursuant to such obligation;


                                       8


          2.2.9.  the dates,  if any,  on which and the price or prices at which
the Securities of the Series will be repurchased by the Company at the option
of the Holders thereof and other detailed terms and provisions of such
repurchase obligations;

          2.2.10.  if  other  than  denominations  of  $1,000  and any  integral
multiple thereof, the denominations in which the Securities of the Series
shall be issuable;

          2.2.11.  the forms of the  Securities of the Series in bearer or fully
registered form (and, if in fully registered form, whether the Securities will
be issuable as Global Securities);

          2.2.12. if other than the principal amount thereof, the portion of the
principal amount of the Securities of the Series that shall be payable upon
declaration of acceleration of the maturity thereof pursuant to Section 6.2;

          2.2.13.  the currency of denomination of the Securities of the Series,
which may be Dollars or any Foreign Currency, including, but not limited to,
the ECU, and if such currency of denomination is a composite currency other
than the ECU, the agency or organization, if any, responsible for overseeing
such composite currency;

          2.2.14. the designation of the currency,  currencies or currency units
in which payment of the principal of and interest, if any, on the Securities of
the Series will be made;

          2.2.15.  if  payments  of  principal  of or  interest,  if any, on the
Securities of the Series are to be made in one or more currencies or currency
units other than that or those in which such Securities are denominated, the
manner in which the exchange rate with respect to such payments will be
determined;

          2.2.16.  the manner in which the amounts of payment of principal of or
interest, if any, on the Securities of the Series will be determined, if such
amounts may be determined by reference to an index based on a currency or
currencies or by reference to a commodity, commodity index, stock exchange
index or financial index;

          2.2.17. the provisions,  if any, relating to any security provided for
the Securities of the Series;

          2.2.18.  if the  holders of  Securities  of the Series may  convert or
exchange the Securities into or for securities of the Issuer or of other
entities or other property, the period or periods within which, the rate or
rates at which and the terms and conditions upon which Securities of the Series
may be converted or exchanged, in whole or in part;

          2.2.19.  any  addition  to or change in the  Events of  Default  which
applies to any Securities of the Series and any change in the right of the
Trustee or the requisite Holders of such Securities to declare the principal
amount thereof due and payable pursuant to Section 6.2;

          2.2.20.  any  addition  to or  change  in the  covenants  set forth in
Articles IV or V which applies to Securities of the Series;


                                       9


          2.2.21.  any other terms of the  Securities of the Series (which terms
shall not be inconsistent with the provisions of this Indenture, except as
permitted by Section 9.1, but which may modify or delete any provision of this
Indenture insofar as it applies to such Series); and

          2.2.22. any depositories,  interest rate calculation agents,  exchange
rate calculation agents or other agents with respect to Securities of such
Series if other than those appointed herein.

                  All Securities of any one Series need not be issued at the
same time and may be issued from time to time, consistent with the terms of this
Indenture, if so provided by or pursuant to the Board Resolution, supplemental
indenture or Officers' Certificate referred to above, and the authorized
principal amount of any Series may not be increased to provide for issuances of
additional Securities of such Series, unless otherwise provided in such Board
Resolution, supplemental indenture or Officers' Certificate.

Section 2.3.      Execution and Authentication.

                  Two Officers shall sign the Securities for the Company by
manual or facsimile signature.

                  If an Officer whose signature is on a Security no longer holds
that office at the time the Security is authenticated, the Security shall
nevertheless be valid.

                  A Security shall not be valid until authenticated by the
manual signature of the Trustee or an authenticating agent. The signature shall
be conclusive evidence that the Security has been authenticated under this
Indenture.

                  The Trustee shall at any time, and from time to time,
authenticate Securities for original issue in the principal amount provided in
the Board Resolution, supplemental indenture hereto or Officers' Certificate,
upon receipt by the Trustee of a Company Order. Such Company Order may authorize
authentication and delivery pursuant to oral or electronic instructions from the
Company or its duly authorized agent or agents, which oral instructions shall be
promptly confirmed in writing. Each Security shall be dated the date of its
authentication unless otherwise provided by a Board Resolution, a supplemental
indenture hereto or an Officers' Certificate.

                  The aggregate principal amount of Securities of any Series
outstanding at any time may not exceed any limit upon the maximum principal
amount for such Series set forth in the Board Resolution, supplemental indenture
hereto or Officers' Certificate delivered pursuant to Section 2.2, except as
provided in Section 2.8.

                  Prior to the issuance of Securities of any Series, the Trustee
shall have received and (subject to Section 7.2) shall be fully protected in
relying on: (a) the Board Resolution, supplemental indenture hereto or Officers'
Certificate establishing the form of the Securities of that Series or of
Securities within that Series and the terms of the Securities of that Series or
of Securities within that Series, (b) an Officers' Certificate complying with
Section 10.4, and (c) an Opinion of Counsel complying with Section 10.4.


                                       10


                  The Trustee shall have the right to decline to authenticate
and deliver any Securities of such Series: (a) if the Trustee, being advised by
counsel, determines that such action may not lawfully be taken; or (b) if the
Trustee in good faith by its board of directors or trustees, executive committee
or a trust committee of directors and/or vice-presidents shall determine that
such action would expose the Trustee to personal liability to Holders of any
then outstanding Series of Securities.

                  The Trustee may appoint an authenticating agent acceptable to
the Company to authenticate Securities. An authenticating agent may authenticate
Securities whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication by such agent. An
authenticating agent has the same rights as an Agent to deal with the Company or
an Affiliate.

Section 2.4.      Registrar and Paying Agent.

                  The Company shall maintain, with respect to each Series of
Securities, at the place or places specified with respect to such Series
pursuant to Section 2.2, an office or agency where Securities of such Series may
be presented or surrendered for payment ("Paying Agent"), where Securities of
such Series may be surrendered for registration of transfer or exchange
("Registrar") and where notices and demands to or upon the Company in respect of
the Securities of such Series and this Indenture may be served ("Service
Agent"). The Registrar shall keep a register with respect to each Series of
Securities and to their transfer and exchange. The Company will give prompt
written notice to the Trustee of the name and address, and any change in the
name or address, of each Registrar, Paying Agent or Service Agent. If at any
time the Company shall fail to maintain any such required Registrar, Paying
Agent or Service Agent or shall fail to furnish the Trustee with the name and
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee, and the Company hereby
appoints the Trustee as its agent to receive all such presentations, surrenders,
notices and demands.

                  The Company may also from time to time designate one or more
co-registrars, additional paying agents or additional service agents and may
from time to time rescind such designations; provided, however, that no such
designation or rescission shall in any manner relieve the Company of its
obligations to maintain a Registrar, Paying Agent and Service Agent in each
place so specified pursuant to Section 2.2 for Securities of any Series for such
purposes. The Company will give prompt written notice to the Trustee of any such
designation or rescission and of any change in the name or address of any such
co-registrar, additional paying agent or additional service agent. The term
"Registrar" includes any co-registrar; the term "Paying Agent" includes any
additional paying agent; and the term "Service Agent" includes any additional
service agent.
                  The Company hereby appoints the Trustee the initial Registrar,
Paying Agent and Service Agent for each Series unless another Registrar, Paying
Agent or Service Agent, as the case may be, is appointed prior to the time
Securities of that Series are first issued.


                                       11


Section 2.5.      Paying Agent to Hold Money in Trust.

                  The Company shall require each Paying Agent other than the
Trustee to agree in writing that the Paying Agent will hold in trust, for the
benefit of Securityholders of any Series of Securities, or the Trustee, all
money held by the Paying Agent for the payment of principal of or interest on
the Series of Securities, and will notify the Trustee of any default by the
Company in making any such payment. While any such default continues, the
Trustee may require a Paying Agent to pay all money held by it to the Trustee.
The Company at any time may require a Paying Agent to pay all money held by it
to the Trustee. Upon payment over to the Trustee, the Paying Agent (if other
than the Company or a Subsidiary) shall have no further liability for the money.
If the Company or a Subsidiary acts as Paying Agent, it shall segregate and hold
in a separate trust fund for the benefit of Securityholders of any Series of
Securities all money held by it as Paying Agent.

Section 2.6.      Securityholder Lists.

                  The Trustee shall preserve in as current a form as is
reasonably practicable the most recent list available to it of the names and
addresses of Securityholders of each Series of Securities and shall otherwise
comply with TIA Section 312(a). If the Trustee is not the Registrar, the Company
shall furnish to the Trustee at least ten days before each interest payment date
and at such other times as the Trustee may request in writing a list, in such
form and as of such date as the Trustee may reasonably require, of the names and
addresses of Securityholders of each Series of Securities.

Section 2.7.      Transfer and Exchange.

                  Where Securities of a Series are presented to the Registrar or
a co-registrar with a request to register a transfer or to exchange them for an
equal principal amount of Securities of the same Series, the Registrar shall
register the transfer or make the exchange if its requirements for such
transactions are met. To permit registrations of transfers and exchanges, the
Trustee shall authenticate Securities at the Registrar's request. No service
charge shall be made for any registration of transfer or exchange (except as
otherwise expressly permitted herein), but the Company may require payment of a
sum sufficient to cover any transfer tax or similar governmental charge payable
in connection therewith (other than any such transfer tax or similar
governmental charge payable upon exchanges pursuant to Sections 2.11, 3.6 or
9.6).

                  Neither the Company nor the Registrar shall be required (a) to
issue, register the transfer of, or exchange Securities of any Series for the
period beginning at the opening of business fifteen days immediately preceding
the mailing of a notice of redemption of Securities of that Series selected for
redemption and ending at the close of business on the day of such mailing, or
(b) to register the transfer of or exchange Securities of any Series selected,
called or being called for redemption as a whole or the portion being redeemed
of any such Securities selected, called or being called for redemption in part.


                                       12


Section 2.8.      Mutilated, Destroyed, Lost and Stolen Securities.

                  If any mutilated Security is surrendered to the Trustee, the
Company shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Security of the same Series and of like tenor and principal
amount and bearing a number not contemporaneously outstanding.

                  If there shall be delivered to the Company and the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any Security
and (ii) such security or indemnity as may be required by them to save each of
them and any agent of either of them harmless, then, in the absence of notice to
the Company or the Trustee that such Security has been acquired by a bona fide
purchaser, the Company shall execute and upon its request the Trustee shall
authenticate and make available for delivery, in lieu of any such destroyed,
lost or stolen Security, a new Security of the same Series and of like tenor and
principal amount and bearing a number not contemporaneously outstanding.

                  In case any such mutilated, destroyed, lost or stolen Security
has become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

                  Upon the issuance of any new Security under this Section, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

                  Every new Security of any Series issued pursuant to this
Section in lieu of any destroyed, lost or stolen Security shall constitute an
original additional contractual obligation of the Company, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Securities of that Series duly issued
hereunder.

                  The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Securities.

Section 2.9.      Outstanding Securities.

                  The Securities outstanding at any time are all the Securities
authenticated by the Trustee except for those canceled by it, those delivered to
it for cancellation, those reductions in the interest on a Global Security
effected by the Trustee in accordance with the provisions hereof and those
described in this Section as not outstanding.

                  If a Security is replaced pursuant to Section 2.8, it ceases
to be outstanding until the Trustee receives proof satisfactory to it that the
replaced Security is held by a bona fide purchaser.

                  If the Paying Agent (other than the Company, a Subsidiary or
an Affiliate of any thereof) holds on the Maturity of Securities of a Series
money sufficient to pay such Securities payable on that date, then on and after
that date such Securities of the Series cease to be outstanding and interest on
them ceases to accrue.


                                       13


                  A Security does not cease to be outstanding because the
Company or an Affiliate holds the Security.

                  In determining whether the Holders of the requisite principal
amount of outstanding Securities have given any request, demand, authorization,
direction, notice, consent or waiver hereunder, the principal amount of a
Discount Security that shall be deemed to be outstanding for such purposes shall
be the amount of the principal thereof that would be due and payable as of the
date of such determination upon a declaration of acceleration of the Maturity
thereof pursuant to Section 6.2.

Section 2.10.     Treasury Securities.

                  In determining whether the Holders of the required principal
amount of Securities of a Series have concurred in any request, demand,
authorization, direction, notice, consent or waiver Securities of a Series owned
by the Company or an Affiliate shall be disregarded, except that for the
purposes of determining whether the Trustee shall be protected in relying on any
such request, demand, authorization, direction, notice, consent or waiver only
Securities of a Series that the Trustee knows are so owned shall be so
disregarded.

Section 2.11.     Temporary Securities.

                  Until definitive Securities are ready for delivery, the
Company may prepare and the Trustee shall authenticate temporary Securities upon
a Company Order. Temporary Securities shall be substantially in the form of
definitive Securities but may have variations that the Company considers
appropriate for temporary Securities. Without unreasonable delay, the Company
shall prepare and the Trustee upon request shall authenticate definitive
Securities of the same Series and date of maturity in exchange for temporary
Securities. Until so exchanged, temporary Securities shall have the same rights
under this Indenture as the definitive Securities.

Section 2.12.     Cancellation.

                  The Company at any time may deliver Securities to the Trustee
for cancellation. The Registrar and the Paying Agent shall forward to the
Trustee any Securities surrendered to them for registration of transfer,
exchange or payment. The Trustee shall cancel all Securities surrendered for
transfer, exchange, payment, replacement or cancellation and shall destroy such
canceled Securities (subject to the record retention requirement of the Exchange
Act) and deliver a certificate of such destruction to the Company, unless the
Company otherwise directs. The Company may not issue new Securities to replace
Securities that it has paid or delivered to the Trustee for cancellation.

Section 2.13.     Defaulted Interest.

                  If the Company defaults in a payment of interest on a Series
of Securities, it shall pay the defaulted interest, plus, to the extent
permitted by law, any interest payable on the defaulted interest, to the persons
who are Securityholders of the Series on a subsequent special record date. The
Company shall fix the record date and payment date. At least 30 days before the
record date, the Company shall mail to the Trustee and to each Securityholder of
the Series a notice that states the record date, the payment date and the amount
of interest to be paid. The Company may pay defaulted interest in any other
lawful manner.


                                       14


Section 2.14.     Global Securities.

          2.14.1.  Terms  of  Securities.  A Board  Resolution,  a  supplemental
indenture hereto or an Officers' Certificate shall establish whether the
Securities of a Series shall be issued in whole or in part in the form of one
or more Global Securities and the Depository for such Global Security or
Securities.

          2.14.2.  Transfer and Exchange.  Notwithstanding any provisions to the
contrary contained in Section 2.7 of the Indenture and in addition thereto, any
Global Security shall be exchangeable pursuant to Section 2.7 of the Indenture
for Securities registered in the names of Holders other than the Depository for
such Security or its nominee only if (i) such Depository notifies the Company
that it is unwilling or unable to continue as Depository for such Global
Security or if at any time such Depository ceases to be a clearing agency
registered under the Exchange Act, and, in either case, the Company fails to
appoint a successor Depository within 90 days of such event, (ii) the Company
executes and delivers to the Trustee an Officers' Certificate to the effect
that such Global Security shall be so exchangeable or (iii) an Event of Default
with respect to the Securities represented by such Global Security shall have
happened and be continuing. Any Global Security that is exchangeable pursuant
to the preceding sentence shall be exchangeable for Securities registered in
such names as the Depository shall direct in writing in an aggregate principal
amount equal to the principal amount of the Global Security with like tenor
and terms.

                  Except as provided in this Section 2.14.2, a Global Security
may not be transferred except as a whole by the Depository with respect to such
Global Security to a nominee of such Depository, by a nominee of such Depository
to such Depository or another nominee of such Depository or by the Depository or
any such nominee to a successor Depository or a nominee of such a successor
Depository.

          2.14.3. Legend. Unless otherwise provided pursuant to Section 2.2, any
Global Security issued hereunder shall bear a legend in substantially the
following form:

                  "This Security is a Global Security within the meaning of the
Indenture hereinafter referred to and is registered in the name of the
Depository or a nominee of the Depository. This Security is exchangeable for
Securities registered in the name of a person other than the Depository or its
nominee only in the limited circumstances described in the Indenture, and may
not be transferred except as a whole by the Depository to a nominee of the
Depository, by a nominee of the Depository to the Depository or another nominee
of the Depository or by the Depository or any such nominee to a successor
Depository or a nominee of such a successor Depository."

          2.14.4.  Acts of Holders.  The  Depository,  as a Holder,  may appoint
agents and otherwise authorize participants to give or take any request,
demand, authorization, direction, notice, consent, waiver or other action which
a Holder is entitled to give or take under the Indenture.


                                       15


          2.14.5.  Payments.   Notwithstanding  the  other  provisions  of  this
Indenture, unless otherwise specified as contemplated by Section 2.2,
payment of the principal of, premium, if any, and interest, if any, on
any Global Security shall be made to the Holder thereof.

          2.14.6.  Consents,  Declaration and Directions.  Except as provided in
Section 2.14.5, the Company, the Trustee and any Agent shall treat a person as
the Holder of such principal amount of outstanding Securities of such Series
represented by a Global Security as shall be specified in a written statement
of the Depository with respect to such Global Security, for purposes of
obtaining any consents, declarations, waivers or directions required to be
given by the Holders pursuant to this Indenture.

Section 2.15.     CUSIP Numbers.

                  The Company in issuing the Securities may use "CUSIP" numbers
(if then generally in use), and, if so, the Trustee shall use "CUSIP" numbers in
notices of redemption as a convenience to Holders; provided that any such notice
may state that no representation is made as to the correctness of such numbers
either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other elements of
identification printed on the Securities, and any such redemption shall not be
affected by any defect in or omission of such numbers.

                                  ARTICLE III.
                                   REDEMPTION

Section 3.1.      Notice to Trustee.

                  The Company may, with respect to any Series of Securities,
reserve the right to redeem and pay the Series of Securities or may covenant to
redeem and pay the Series of Securities or any part thereof prior to the Stated
Maturity thereof at such time and on such terms as provided for in such
Securities. If a Series of Securities is redeemable and the Company wants or is
obligated to redeem prior to the Stated Maturity thereof all or part of the
Series of Securities pursuant to the terms of such Securities, it shall notify
the Trustee of the redemption date and the principal amount of Series of
Securities to be redeemed. The Company shall give the notice at least 45 days
before the redemption date (or such shorter notice as may be acceptable to the
Trustee).

Section 3.2.      Selection of Securities to be Redeemed.

                  Unless otherwise indicated for a particular Series by a Board
Resolution, a supplemental indenture or an Officers' Certificate, if less than
all the Securities of a Series are to be redeemed, the Trustee shall select the
Securities of the Series to be redeemed in any manner that the Trustee deems
fair and appropriate. The Trustee shall make the selection from Securities of
the Series outstanding not previously called for redemption. The Trustee may
select for redemption portions of the principal of Securities of the Series that
have denominations larger than $1,000. Securities of the Series and portions of
them it selects shall be in amounts of $1,000 or whole multiples of $1,000 or,
with respect to Securities of any Series issuable in other denominations
pursuant to Section 2.2.10, the minimum principal denomination for each Series
and integral multiples thereof. Provisions of this Indenture that apply to
Securities of a Series called for redemption also apply to portions of
Securities of that Series called for redemption.


                                       16


Section 3.3.      Notice of Redemption.

                  Unless otherwise indicated for a particular Series by a Board
Resolution, a supplemental indenture hereto or an Officers' Certificate, at
least 30 days but not more than 60 days before a redemption date, the Company
shall mail a notice of redemption by first-class mail to each Holder whose
Securities are to be redeemed and if any Bearer Securities are outstanding,
publish on one occasion a notice in an Authorized Newspaper.

                  The notice shall identify the Securities of the Series to be
redeemed and shall state:

          (a)  the redemption date;

          (b)  the redemption price;

          (c)  the name and address of the Paying Agent;

          (d)  that  Securities  of the  Series  called for  redemption  must be
               surrendered to the Paying Agent to collect the redemption price;

          (e)  that interest on  Securities of the Series called for  redemption
               ceases to accrue on and after the redemption date; and

          (f)  any  other  information  as may be  required  by the terms of the
               particular Series or the Securities of a Series being redeemed.

                  At the Company's request, the Trustee shall give the notice of
redemption in the Company's name and at its expense.

Section 3.4.      Effect of Notice of Redemption.

                  Once notice of redemption is mailed or published as provided
in Section 3.3, Securities of a Series called for redemption become due and
payable on the redemption date and at the redemption price. A notice of
redemption may not be conditional. Upon surrender to the Paying Agent, such
Securities shall be paid at the redemption price plus accrued interest to the
redemption date.

Section 3.5.      Deposit of Redemption Price.

                  On or before the redemption date, the Company shall deposit
with the Paying Agent money sufficient to pay the redemption price of and
accrued interest, if any, on all Securities to be redeemed on that date.


                                       17


Section 3.6.      Securities Redeemed in Part.

                  Upon surrender of a Security that is redeemed in part, the
Trustee shall authenticate for the Holder a new Security of the same Series and
the same Maturity equal in principal amount to the unredeemed portion of the
Security surrendered.

                                  ARTICLE IV.
                                   COVENANTS

Section 4.1.      Payment of Principal and Interest.

                  The Company covenants and agrees for the benefit of the
Holders of each Series of Securities that it will duly and punctually pay the
principal of and interest, if any, on the Securities of that Series in
accordance with the terms of such Securities and this Indenture.

Section 4.2.      SEC Reports.

                  The Company shall deliver to the Trustee within 15 days after
it files them with the SEC copies of the annual reports and of the information,
documents, and other reports (or copies of such portions of any of the foregoing
as the SEC may by rules and regulations prescribe) which the Company is required
to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act. The
Company also shall comply with the other provisions of TIA Section 314(a).

Section 4.3.      Compliance Certificate.

                  The Company shall deliver to the Trustee, within 90 days after
the end of each fiscal year of the Company, an Officers' Certificate stating
that a review of the activities of the Company and its Subsidiaries during the
preceding fiscal year has been made under the supervision of the signing
Officers with a view to determining whether the Company has kept, observed,
performed and fulfilled its obligations under this Indenture, and further
stating, as to each such Officer signing such certificate, that to the best of
his knowledge the Company has kept, observed, performed and fulfilled each and
every covenant contained in this Indenture and is not in default in the
performance or observance of any of the terms, provisions and conditions hereof
(or, if a Default or Event of Default shall have occurred, describing all such
Defaults or Events of Default of which he may have knowledge).

                  The Company will, so long as any of the Securities are
outstanding, deliver to the Trustee, forthwith upon becoming aware of any
Default or Event of Default, an Officers' Certificate specifying such Default or
Event of Default and what action the Company is taking or proposes to take with
respect thereto.

Section 4.4.      Stay, Extension and Usury Laws.

                  The Company covenants (to the extent that it may lawfully do
so) that it will not at any time insist upon, plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay, extension or usury law
wherever enacted, now or at any time hereafter in force, which may affect the
covenants or the performance of this Indenture or the Securities; and the
Company (to the extent it may lawfully do so) hereby expressly waives all
benefit or advantage of any such law and covenants that it will not, by resort
to any such law, hinder, delay or impede the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law has been enacted.


                                       18


Section 4.5.      Corporate Existence.

                  Subject to Article V, the Company will do or cause to be done
all things necessary to preserve and keep in full force and effect its corporate
existence and the corporate, partnership or other existence of each Significant
Subsidiary in accordance with the respective organizational documents of each
Significant Subsidiary and the rights (charter and statutory), licenses and
franchises of the Company and its Significant Subsidiaries; provided, however,
that the Company shall not be required to preserve any such right, license or
franchise, or the corporate, partnership or other existence of any Significant
Subsidiary, if the Board of Directors shall determine that the preservation
thereof is no longer desirable in the conduct of the business of the Company and
its Subsidiaries taken as a whole and that the loss thereof is not adverse in
any material respect to the Holders.

Section 4.6.      Taxes.

                  The Company shall, and shall cause each of its Significant
Subsidiaries to, pay prior to delinquency all taxes, assessments and
governmental levies, except as contested in good faith and by appropriate
proceedings.

                                   ARTICLE V.
                                   SUCCESSORS

Section 5.1.      When Company May Merge, Etc.

                  The Company shall not consolidate with or merge into, or
convey, transfer or lease all or substantially all of its properties and assets
to, any person (a "successor person"), and may not permit any person to merge
into, or convey, transfer or lease its properties and assets substantially as an
entirety to, the Company, unless:

          (a)  the  successor  person  (if any) is a  corporation,  partnership,
               trust or other entity  organized and validly  existing  under the
               laws of any U.S. domestic  jurisdiction and expressly assumes the
               Company's  obligations on the Securities and under this Indenture
               and

          (b)  immediately after giving effect to the transaction, no Default or
               Event of Default, shall have occurred and be continuing.

                  The Company shall deliver to the Trustee prior to the
consummation of the proposed transaction an Officers' Certificate to the
foregoing effect and an Opinion of Counsel stating that the proposed transaction
and such supplemental indenture comply with this Indenture.

Section 5.2.      Successor Corporation Substituted.


                                       19


                  Upon any consolidation or merger, or any sale, lease,
conveyance or other disposition of all or substantially all of the assets of the
Company in accordance with Section 5.1, the successor corporation formed by such
consolidation or into or with which the Company is merged or to which such sale,
lease, conveyance or other disposition is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company under
this Indenture with the same effect as if such successor person has been named
as the Company herein; provided, however, that the predecessor Company in the
case of a sale, lease, conveyance or other disposition shall not be released
from the obligation to pay the principal of and interest, if any, on the
Securities.

                                  ARTICLE VI.
                              DEFAULTS AND REMEDIES

Section 6.1.      Events of Default.

                  "Event of Default," wherever used herein with respect to
Securities of any Series, means any one of the following events, unless in the
establishing Board Resolution, supplemental indenture or Officers' Certificate,
it is provided that such Series shall not have the benefit of said Event of
Default:

          (a)  default in the payment of any  interest  on any  Security of that
               Series when it becomes due and payable,  and  continuance of such
               default for a period of 30 days (unless the entire amount of such
               payment is  deposited  by the Company  with the Trustee or with a
               Paying Agent prior to the  expiration of such period of 30 days);
               or

          (b)  default in the payment of the  principal  of any Security of that
               Series at its Maturity; or

          (c)  default in the deposit of any sinking fund  payment,  when and as
               due in respect of any Security of that Series; or

          (d)  default in the  performance or breach of any covenant or warranty
               of the  Company  in this  Indenture  (other  than a  covenant  or
               warranty that has been included in this Indenture  solely for the
               benefit of Series of Securities  other than that  Series),  which
               default continues uncured for a period of 60 days after there has
               been given,  by registered  or certified  mail, to the Company by
               the  Trustee or to the  Company and the Trustee by the Holders of
               at least 25% in principal amount of the outstanding Securities of
               that Series a written  notice  specifying  such default or breach
               and requiring it to be remedied and stating that such notice is a
               "Notice of Default" hereunder; or

          (e)  the Company or any of its Significant Subsidiaries pursuant to or
               within the meaning of any Bankruptcy Law:

               (i)  commences a voluntary case,

               (ii) consents  to the entry of an order for relief  against it in
                    an involuntary case,


                                       20


               (iii) consents to the appointment of a Custodian of it or for all
                    or substantially all of its property,

               (iv) makes a general assignment for the benefit of its creditors,
                    or

               (v)  generally is unable to pay its debts as the same become due;
                    or

          (f)  a court of competent jurisdiction enters an order or decree under
               any Bankruptcy Law that:

               (i)  is for relief against the Company or any of its  Significant
                    Subsidiaries in an involuntary case,

               (ii) appoints  a   Custodian   of  the  Company  or  any  of  its
                    Significant  Subsidiaries or for all or substantially all of
                    its property, or

               (iii) orders  the  liquidation  of  the  Company  or  any  of its
                    Significant Subsidiaries,

         and the order or decree remains unstayed and in effect for 60 days; or

          (g)  any other Event of Default provided with respect to Securities of
               that  Series,  which  is  specified  in  a  Board  Resolution,  a
               supplemental  indenture  hereto or an Officers'  Certificate,  in
               accordance with Section 2.2.19.

                  The term "Bankruptcy Law" means title 11, U.S. Code or any
similar Federal or State law for the relief of debtors. The term "Custodian"
means any receiver, trustee, assignee, liquidator or similar official under any
Bankruptcy Law.

Section 6.2.      Acceleration of Maturity; Rescission and Annulment.


                  If an Event of Default with respect to Securities of any
Series at the time outstanding occurs and is continuing (other than an Event of
Default referred to in Section 6.1(e) or (f)) then in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
outstanding Securities of that Series may declare the principal amount (or, if
any Securities of that Series are Discount Securities, such portion of the
principal amount as may be specified in the terms of such Securities) of and
accrued and unpaid interest, if any, on all of the Securities of that Series to
be due and payable immediately, by a notice in writing to the Company (and to
the Trustee if given by Holders), and upon any such declaration such principal
amount (or specified amount) and accrued and unpaid interest, if any, shall
become immediately due and payable. If an Event of Default specified in Section
6.1(e) or (f) shall occur, the principal amount (or specified amount) of and
accrued and unpaid interest, if any, on all outstanding Securities shall ipso
facto become and be immediately due and payable without any declaration or other
act on the part of the Trustee or any Holder.

                  At any time after such a declaration of acceleration with
respect to any Series has been made and before a judgment or decree for payment
of the money due has been obtained by the Trustee as hereinafter in this Article
provided, the Holders of a majority in principal amount of the outstanding
Securities of that Series, by written notice to the Company and the Trustee, may
rescind and annul such declaration and its consequences if:


                                       21


          (a)  the  Company  has  paid  or  deposited  with  the  Trustee  a sum
               sufficient to pay

               (i)  all  overdue  interest,  if any, on all  Securities  of that
                    Series,

               (ii) the  principal of any  Securities  of that Series which have
                    become   due   otherwise   than  by  such   declaration   of
                    acceleration  and  interest  thereon  at the  rate or  rates
                    prescribed therefor in such Securities,

               (iii) to the  extent  that  payment of such  interest  is lawful,
                    interest upon any overdue  principal and overdue interest at
                    the rate or rates  prescribed  therefor in such  Securities,
                    and

               (iv) all sums paid or advanced by the Trustee  hereunder  and the
                    reasonable   compensation,   expenses,   disbursements   and
                    advances of the Trustee, its agents and counsel;

                  and

          (b)  all Events of Default with respect to  Securities of that Series,
               other than the non-payment of the principal of Securities of that
               Series  which  have  become  due  solely by such  declaration  of
               acceleration,  have been cured or waived as  provided  in Section
               6.13.

                  No such rescission shall affect any subsequent Default or
impair any right consequent thereon.

Section 6.3.      Collection of Indebtedness and Suits for Enforcement by
                  Trustee.

                  The Company covenants that if

          (a)  default is made in the payment of any  interest  on any  Security
               when such  interest  becomes  due and  payable  and such  default
               continues for a period of 30 days, or

          (b)  default is made in the payment of  principal  of any  Security at
               the Maturity thereof, or

          (c)  default is made in the deposit of any sinking  fund  payment when
               and as due by the terms of a Security,  then,  the Company  will,
               upon  demand of the  Trustee,  pay to it, for the  benefit of the
               Holders of such Securities, the whole amount then due and payable
               on such  Securities for principal and interest and, to the extent
               that  payment  of such  interest  shall be  legally  enforceable,
               interest on any overdue principal or any overdue interest, at the
               rate or rates  prescribed  therefor in such  Securities,  and, in
               addition  thereto,  such further amount as shall be sufficient to
               cover  the  costs  and  expenses  of  collection,  including  the
               reasonable compensation,  expenses, disbursements and advances of
               the Trustee, its agents and counsel.


                                       22


                  If the Company fails to pay such amounts forthwith upon such
demand, the Trustee, in its own name and as trustee of an express trust, may
institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company or any other obligor upon such Securities
and collect the moneys adjudged or deemed to be payable in the manner provided
by law out of the property of the Company or any other obligor upon such
Securities, wherever situated.

                  If an Event of Default with respect to any Securities of any
Series occurs and is continuing, the Trustee may in its discretion proceed to
protect and enforce its rights and the rights of the Holders of Securities of
such Series by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any such rights, whether for the specific
enforcement of any covenant or agreement in this Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.

Section 6.4.      Trustee May File Proofs of Claim.

                  In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or
other judicial proceeding relative to the Company or any other obligor upon the
Securities or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal of the Securities
shall then be due and payable as therein expressed or by declaration or
otherwise and irrespective of whether the Trustee shall have made any demand on
the Company for the payment of overdue principal or interest) shall be entitled
and empowered, by intervention in such proceeding or otherwise,

          (a)  to file and prove a claim for the whole amount of  principal  and
               interest  owing and unpaid in respect  of the  Securities  and to
               file  such  other  papers or  documents  as may be  necessary  or
               advisable  in order to have the claims of the Trustee  (including
               any   claim   for   the   reasonable   compensation,    expenses,
               disbursements  and  advances  of  the  Trustee,  its  agents  and
               counsel) and of the Holders allowed in such judicial  proceeding,
               and

          (b)  to collect and receive  any moneys or other  property  payable or
               deliverable  on any such claims and to distribute  the same,  and
               any   custodian,   receiver,   assignee,   trustee,   liquidator,
               sequestrator  or other  similar  official  in any  such  judicial
               proceeding  is  hereby  authorized  by each  Holder  to make such
               payments to the Trustee and, in the event that the Trustee  shall
               consent to the making of such  payments  directly to the Holders,
               to  pay to the  Trustee  any  amount  due it for  the  reasonable
               compensation,   expenses,   disbursements  and  advances  of  the
               Trustee,  its agents and counsel,  and any other  amounts due the
               Trustee under Section 7.7.

                  Nothing herein contained shall be deemed to authorize the
Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

Section 6.5.      Trustee May Enforce Claims Without Possession of Securities.


                                       23


                  All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, be for the
ratable benefit of the Holders of the Securities in respect of which such
judgment has been recovered.

Section 6.6.      Application of Money Collected.

                  Any money collected by the Trustee pursuant to this Article
shall be applied in the following order, at the date or dates fixed by the
Trustee and, in case of the distribution of such money on account of principal
or interest, upon presentation of the Securities and the notation thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

                  First: To the payment of all amounts due the Trustee under
Section 7.7; and

                  Second: To the payment of the amounts then due and unpaid for
principal of and interest on the Securities in respect of which or for the
benefit of which such money has been collected, ratably, without preference or
priority of any kind, according to the amounts due and payable on such
Securities for principal and interest, respectively; and

                  Third: To the Company.

Section 6.7.      Limitation on Suits.

                  No Holder of any Security of any Series shall have any right
to institute any proceeding, judicial or otherwise, with respect to this
Indenture, or for the appointment of a receiver or trustee, or for any other
remedy hereunder, unless

          (a)  such Holder has previously given written notice to the Trustee of
               a continuing  Event of Default with respect to the  Securities of
               that Series;

          (b)  the  Holders  of not less  than 25% in  principal  amount  of the
               outstanding  Securities  of that Series  shall have made  written
               request to the  Trustee to  institute  proceedings  in respect of
               such Event of Default in its own name as Trustee hereunder;

          (c)  such Holder or Holders  have  offered to the  Trustee  reasonable
               indemnity  against  the costs,  expenses  and  liabilities  to be
               incurred in compliance with such request;

          (d)  the Trustee for 60 days after its receipt of such notice, request
               and  offer  of  indemnity   has  failed  to  institute  any  such
               proceeding; and

          (e)  no  direction  inconsistent  with such  written  request has been
               given to the Trustee  during such 60-day period by the Holders of
               a majority in principal  amount of the outstanding  Securities of
               that Series;


                                       24


it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all such
Holders.

Section 6.8.      Unconditional Right of Holders to Receive Principal and
                  Interest.

                  Notwithstanding any other provision in this Indenture, the
Holder of any Security shall have the right, which is absolute and
unconditional, to receive payment of the principal of and interest, if any, on
such Security on the Stated Maturity or Stated Maturities expressed in such
Security (or, in the case of redemption, on the redemption date) and to
institute suit for the enforcement of any such payment, and such rights shall
not be impaired without the consent of such Holder.

Section 6.9.      Restoration of Rights and Remedies.

                  If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Trustee and the Holders shall
be restored severally and respectively to their former positions hereunder and
thereafter all rights and remedies of the Trustee and the Holders shall continue
as though no such proceeding had been instituted.

Section 6.10.     Rights and Remedies Cumulative.

                  Except as otherwise provided with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities in Section 2.8, no
right or remedy herein conferred upon or reserved to the Trustee or to the
Holders is intended to be exclusive of any other right or remedy, and every
right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

Section 6.11.     Delay or Omission Not Waiver.

                  No delay or omission of the Trustee or of any Holder of any
Securities to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein. Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time to
time, and as often as may be deemed expedient, by the Trustee or by the Holders,
as the case may be.


                                       25


Section 6.12.     Control by Holders.

                  The Holders of a majority in principal amount of the
outstanding Securities of any Series shall have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
Trustee, or exercising any trust or power conferred on the Trustee, with respect
to the Securities of such Series, provided that

(a)      such direction shall not be in conflict with any rule of law or with
         this Indenture,

(b)      the Trustee may take any other action deemed proper by the Trustee
         which is not inconsistent with such direction, and

(c)      subject to the provisions of Section 6.1, the Trustee shall have the
         right to decline to follow any such direction if the Trustee in good
         faith shall, by a Responsible Officer of the Trustee, determine that
         the proceeding so directed would involve the Trustee in personal
         liability.

Section 6.13.     Waiver of Past Defaults.

                  Subject to Section 6.2, the Holders of not less than a
majority in principal amount of the outstanding Securities of any Series may on
behalf of the Holders of all the Securities of such Series waive any past
Default hereunder with respect to such Series and its consequences, except a
Default in the payment of the principal of or interest on any Security of such
Series (provided, however, that the Holders of a majority in principal amount of
the outstanding Securities of any Series may rescind an acceleration and its
consequences, including any related payment default that resulted from such
acceleration). Upon any such waiver, such Default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other Default or impair any right consequent thereon.

Section 6.14.     Undertaking for Costs.

                  All parties to this Indenture agree, and each Holder of any
Security by his acceptance thereof shall be deemed to have agreed, that any
court may in its discretion require, in any suit for the enforcement of any
right or remedy under this Indenture, or in any suit against the Trustee for any
action taken, suffered or omitted by it as Trustee, the filing by any party
litigant in such suit of an undertaking to pay the costs of such suit, and that
such court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party litigant;
but the provisions of this Section shall not apply to any suit instituted by the
Company, to any suit instituted by the Trustee, to any suit instituted by any
Holder, or group of Holders, holding in the aggregate more than 10% in principal
amount of the outstanding Securities of any Series, or to any suit instituted by
any Holder for the enforcement of the payment of the principal of or interest on
any Security on or after the Stated Maturity or Stated Maturities expressed in
such Security (or, in the case of redemption, on the redemption date).


                                       26


                                  ARTICLE VII.
                                     TRUSTEE

Section 7.1.      Duties of Trustee.

          (a)  If an  Event of  Default  has  occurred  and is  continuing,  the
               Trustee shall exercise the rights and powers vested in it by this
               Indenture  and use the same  degree  of care  and  skill in their
               exercise  as a  prudent  man  would  exercise  or use  under  the
               circumstances in the conduct of his own affairs.

          (b)  Except during the continuance of an Event of Default:

               (i)  The  Trustee   need  perform  only  those  duties  that  are
                    specifically set forth in this Indenture and no others.

               (ii) In the  absence of bad faith on its part,  the  Trustee  may
                    conclusively rely, as to the truth of the statements and the
                    correctness  of  the  opinions   expressed   therein,   upon
                    Officers'  Certificates or Opinions of Counsel  furnished to
                    the  Trustee  and  conforming  to the  requirements  of this
                    Indenture;  however,  in  the  case  of any  such  Officers'
                    Certificates  or Opinions of Counsel which by any provisions
                    hereof are  specifically  required  to be  furnished  to the
                    Trustee,   the  Trustee   shall   examine   such   Officers'
                    Certificates and Opinions of Counsel to determine whether or
                    not they conform to the requirements of this Indenture.

          (c)  The  Trustee  may  not be  relieved  from  liability  for its own
               negligent  action,  its own  negligent  failure to act or its own
               willful misconduct, except that:

               (i)  This paragraph does not limit the effect of paragraph (b) of
                    this Section.

               (ii) The  Trustee  shall not be liable for any error of  judgment
                    made in good faith by a  Responsible  Officer,  unless it is
                    proved that the Trustee was  negligent in  ascertaining  the
                    pertinent facts.

               (iii) The Trustee  shall not be liable with respect to any action
                    taken, suffered or omitted to be taken by it with respect to
                    Securities  of any Series in good faith in  accordance  with
                    the  direction  of the  Holders of a majority  in  principal
                    amount of the outstanding Securities of such Series relating
                    to the time,  method and place of conducting  any proceeding
                    for any remedy  available to the Trustee,  or exercising any
                    trust  or  power  conferred  upon the  Trustee,  under  this
                    Indenture with respect to the Securities of such Series.

          (d)  Every  provision of this Indenture that in any way relates to the
               Trustee is subject to paragraph (a), (b) and (c) of this Section.

          (e)  The Trustee may refuse to perform any duty or exercise  any right
               or power unless it receives indemnity  satisfactory to it against
               any loss, liability or expense.

                                       27



          (f)  The  Trustee  shall  not be  liable  for  interest  on any  money
               received by it except as the  Trustee  may agree in writing  with
               the  Company.  Money  held in  trust by the  Trustee  need not be
               segregated from other funds except to the extent required by law.

          (g)  No provision of this Indenture  shall require the Trustee to risk
               its own funds or otherwise  incur any financial  liability in the
               performance  of any of its duties,  or in the  exercise of any of
               its rights or powers,  if it shall have  reasonable  grounds  for
               believing  that  repayment  of such funds or  adequate  indemnity
               against such risk is not reasonably assured to it.

          (h)  The Paying  Agent,  the Registrar  and any  authenticating  agent
               shall be entitled to the  protections  and  immunities as are set
               forth in paragraphs (a), (b) and (c) of this Section with respect
               to the Trustee.

Section 7.2.      Rights of Trustee.

          (a)  The  Trustee  may rely on and  shall be  protected  in  acting or
               refraining  from  acting upon any  document  believed by it to be
               genuine  and to have  been  signed  or  presented  by the  proper
               person.  The  Trustee  need not  investigate  any fact or  matter
               stated in the document.

          (b)  Before the Trustee acts or refrains  from acting,  it may require
               an Officers'  Certificate  or an Opinion of Counsel.  The Trustee
               shall not be liable  for any  action it takes or omits to take in
               good faith in reliance on such  Officers'  Certificate or Opinion
               of Counsel.

          (c)  The Trustee may act through  agents and shall not be  responsible
               for the misconduct or negligence of any agent  appointed with due
               care. No  Depository  shall be deemed an agent of the Trustee and
               the Trustee shall not be  responsible  for any act or omission by
               any Depository.

          (d)  The Trustee  shall not be liable for any action it takes or omits
               to take in good  faith  which it  believes  to be  authorized  or
               within its rights or powers.

          (e)  The  Trustee  may  consult  with  counsel  and the advice of such
               counsel  or any  Opinion of  Counsel  shall be full and  complete
               authorization  and  protection  in respect  of any action  taken,
               suffered or omitted by it hereunder in good faith and in reliance
               thereon.

          (f)  The Trustee  shall be under no  obligation to exercise any of the
               rights or powers vested in it by this Indenture at the request or
               direction of any of the Holders of Securities unless such Holders
               shall  have  offered  to  the  Trustee  reasonable   security  or
               indemnity against the costs, expenses and liabilities which might
               be incurred by it in compliance with such request or direction.


                                       28


Section 7.3.      Individual Rights of Trustee.

                  The Trustee in its individual or any other capacity may become
the owner or pledgee of Securities and may otherwise deal with the Company or an
Affiliate with the same rights it would have if it were not Trustee. Any Agent
may do the same with like rights. The Trustee is also subject to Sections 7.10
and 7.11.

Section 7.4.      Trustee's Disclaimer.

                  The Trustee makes no representation as to the validity or
adequacy of this Indenture or the Securities, it shall not be accountable for
the Company's use of the proceeds from the Securities, and it shall not be
responsible for any statement in the Securities other than its authentication.

Section 7.5.      Notice of Defaults.

                  If a Default or Event of Default occurs and is continuing with
respect to the Securities of any Series and if it is known to a Responsible
Officer of the Trustee, the Trustee shall mail to each Securityholder of the
Securities of that Series and, if any Bearer Securities are outstanding, publish
on one occasion in an Authorized Newspaper, notice of a Default or Event of
Default within 90 days after it occurs or, if later, after a Responsible Officer
of the Trustee has knowledge of such Default or Event of Default. Except in the
case of a Default or Event of Default in payment of principal of or interest on
any Security of any Series, the Trustee may withhold the notice if and so long
as its corporate trust committee or a committee of its Responsible Officers in
good faith determines that withholding the notice is in the interests of
Securityholders of that Series.

Section 7.6.      Reports by Trustee to Holders.

                  Within 60 days after May 15 in each year, the Trustee shall
transmit by mail to all Securityholders, as their names and addresses appear on
the register kept by the Registrar and, if any Bearer Securities are
outstanding, publish in an Authorized Newspaper, a brief report dated as of such
May 15, in accordance with, and to the extent required under, TIA Section 313.

                  A copy of each report at the time of its mailing to
Securityholders of any Series shall be filed with the SEC and each stock
exchange on which the Securities of that Series are listed. The Company shall
promptly notify the Trustee when Securities of any Series are listed on any
stock exchange.

Section 7.7.      Compensation and Indemnity.

                  The Company shall pay to the Trustee from time to time
reasonable compensation for its services. The Trustee's compensation shall not
be limited by any law on compensation of a trustee of an express trust. The
Company shall reimburse the Trustee upon request for all reasonable
out-of-pocket expenses incurred by it. Such expenses shall include the
reasonable compensation and expenses of the Trustee's agents and counsel.

                  The Company shall indemnify the Trustee (including the cost of
defending itself) against any loss, liability or expense incurred by it except
as set forth in the next paragraph in the performance of its duties under this
Indenture as Trustee or Agent. The Trustee shall notify the Company promptly of


                                       29


any claim for which it may seek indemnity. The Company shall defend the claim
and the Trustee shall cooperate in the defense. The Trustee may have separate
counsel and the Company shall pay the reasonable fees and expenses of such
counsel. The Company need not pay for any settlement made without its consent,
which consent shall not be unreasonably withheld. This indemnification shall
apply to officers, directors, employees, shareholders and agents of the Trustee.

                  The Company need not reimburse any expense or indemnify
against any loss or liability incurred by the Trustee or by any officer,
director, employee, shareholder or agent of the Trustee through negligence or
bad faith.

                  To secure the Company's payment obligations in this Section,
the Trustee shall have a lien prior to the Securities of any Series on all money
or property held or collected by the Trustee, except that held in trust to pay
principal and interest on particular Securities of that Series.

                  When the Trustee incurs expenses or renders services after an
Event of Default specified in Section 6.1(e) or (f) occurs, the expenses and the
compensation for the services are intended to constitute expenses of
administration under any Bankruptcy Law.

Section 7.8.      Replacement of Trustee.

                  A resignation or removal of the Trustee and appointment of a
successor Trustee shall become effective only upon the successor Trustee's
acceptance of appointment as provided in this Section.

                  The Trustee may resign with respect to the Securities of one
or more Series by so notifying the Company. The Holders of a majority in
principal amount of the Securities of any Series may remove the Trustee with
respect to that Series by so notifying the Trustee and the Company. The Company
may remove the Trustee with respect to Securities of one or more Series if:

          (a)  the Trustee fails to comply with Section 7.10;

          (b)  the Trustee is adjudged a bankrupt  or an  insolvent  or an order
               for  relief is entered  with  respect  to the  Trustee  under any
               Bankruptcy Law;

          (c)  a Custodian or public  officer takes charge of the Trustee or its
               property; or

          (d)  the Trustee becomes incapable of acting.

                  If the Trustee resigns or is removed or if a vacancy exists in
the office of Trustee for any reason, the Company shall promptly appoint a
successor Trustee. Within one year after the successor Trustee takes office, the
Holders of a majority in principal amount of the then outstanding Securities may
appoint a successor Trustee to replace the successor Trustee appointed by the
Company.


                                       30


                  If a successor Trustee with respect to the Securities of any
one or more Series does not take office within 60 days after the retiring
Trustee resigns or is removed, the retiring Trustee, the Company or the Holders
of at least 10% in principal amount of the Securities of the applicable Series
may petition any court of competent jurisdiction for the appointment of a
successor Trustee.

                  If the Trustee with respect to the Securities of any one or
more Series fails to comply with Section 7.10, any Securityholder of the
applicable Series may petition any court of competent jurisdiction for the
removal of the Trustee and the appointment of a successor Trustee.

                  A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Immediately after that,
the retiring Trustee shall transfer all property held by it as Trustee to the
successor Trustee subject to the lien provided for in Section 7.7, the
resignation or removal of the retiring Trustee shall become effective, and the
successor Trustee shall have all the rights, powers and duties of the Trustee
with respect to each Series of Securities for which it is acting as Trustee
under this Indenture. A successor Trustee shall mail a notice of its succession
to each Securityholder of each such Series and, if any Bearer Securities are
outstanding, publish such notice on one occasion in an Authorized Newspaper.
Notwithstanding replacement of the Trustee pursuant to this Section 7.8, the
Company's obligations under Section 7.7 hereof shall continue for the benefit of
the retiring trustee with respect to expenses and liabilities incurred by it
prior to such replacement.

Section 7.9.      Successor Trustee by Merger, Etc.

                  If the Trustee consolidates with, merges or converts into, or
transfers all or substantially all of its corporate trust business to, another
corporation, the successor corporation without any further act shall be the
successor Trustee.

Section 7.10.     Eligibility; Disqualification.

                  This Indenture shall always have a Trustee who satisfies the
requirements of TIA Section 310(a)(1), (2) and (5). The Trustee shall always
have a combined capital and surplus of at least $25,000,000 as set forth in its
most recent published annual report of condition. The Trustee shall comply with
TIA Section 310(b).

Section 7.11.     Preferential Collection of Claims Against Company.

                  The Trustee is subject to TIA Section 311(a), excluding any
creditor relationship listed in TIA Section 311(b). A Trustee who has resigned
or been removed shall be subject to TIA Section 311(a) to the extent indicated.


                                       31


                                 ARTICLE VIII.
                     SATISFACTION AND DISCHARGE; DEFEASANCE

Section 8.1.      Satisfaction and Discharge of Indenture.

                  This Indenture shall upon Company Order cease to be of further
effect (except as hereinafter provided in this Section 8.1), and the Trustee, at
the expense of the Company, shall execute proper instruments acknowledging
satisfaction and discharge of this Indenture, when

          (a)  either

               (i)  all  Securities  theretofore   authenticated  and  delivered
                    (other than  Securities  that have been  destroyed,  lost or
                    stolen  and that  have  been  replaced  or paid)  have  been
                    delivered to the Trustee for cancellation; or

               (ii) all such Securities not theretofore delivered to the Trustee
                    for cancellation

                    (1)  have become due and payable, or

                    (2)  will  become due and payable at their  Stated  Maturity
                         within one year, or

                    (3)  are to be called for  redemption  within one year under
                         arrangements satisfactory to the Trustee for the giving
                         of notice of redemption by the Trustee in the name, and
                         at the expense, of the Company, or

                    (4)  are deemed paid and discharged pursuant to Section 8.3,
                         as applicable;

and the Company, in the case of (1), (2) or (3) above, has deposited or caused
to be deposited with the Trustee as trust funds in trust an amount sufficient
for the purpose of paying and discharging the entire indebtedness on such
Securities not theretofore delivered to the Trustee for cancellation, for
principal and interest to the date of such deposit (in the case of Securities
which have become due and payable on or prior to the date of such deposit) or to
the Stated Maturity or redemption date, as the case may be;

          (b)  the Company has paid or caused to be paid all other sums  payable
               hereunder by the Company; and

          (c)  the Company has delivered to the Trustee an Officers' Certificate
               and an Opinion  of  Counsel,  each  stating  that all  conditions
               precedent  herein provided for relating to the  satisfaction  and
               discharge of this Indenture have been complied with.

                  Notwithstanding the satisfaction and discharge of this
Indenture, the obligations of the Company to the Trustee under Section 7.7, and,
if money shall have been deposited with the Trustee pursuant to clause (a) of
this Section, the provisions of Sections 2.4, 2.7, 2.8, 8.1, 8.2 and 8.5 shall
survive.


                                       32


Section 8.2.      Application of Trust Funds; Indemnification.

          (a)  Subject to the  provisions  of Section 8.5,  all money  deposited
               with the  Trustee  pursuant  to Section  8.1,  all money and U.S.
               Government   Obligations   or  Foreign   Government   Obligations
               deposited with the Trustee pursuant to Section 8.3 or 8.4 and all
               money  received  by the  Trustee in  respect  of U.S.  Government
               Obligations or Foreign Government  Obligations deposited with the
               Trustee  pursuant to Section  8.3 or 8.4,  shall be held in trust
               and  applied  by it, in  accordance  with the  provisions  of the
               Securities and this Indenture, to the payment, either directly or
               through any Paying Agent (including the Company acting as its own
               Paying  Agent)  as the  Trustee  may  determine,  to the  persons
               entitled thereto, of the principal and interest for whose payment
               such money has been  deposited with or received by the Trustee or
               to make mandatory sinking fund payments or analogous  payments as
               contemplated by Sections 8.3 or 8.4.

          (b)  The Company shall pay and shall indemnify the Trustee against any
               tax,  fee or other  charge  imposed on or assessed  against  U.S.
               Government   Obligations   or  Foreign   Government   Obligations
               deposited  pursuant to Sections  8.3 or 8.4 or the  interest  and
               principal  received in respect of such obligations other than any
               payable by or on behalf of Holders.

          (c)  The Trustee shall deliver or pay to the Company from time to time
               upon Company Request any U.S.  Government  Obligations or Foreign
               Government  Obligations  or  money  held  by  it as  provided  in
               Sections  8.3  or  8.4  which,  in the  opinion  of a  nationally
               recognized  firm  of  independent  certified  public  accountants
               expressed  in a written  certification  thereof  delivered to the
               Trustee,  are then in excess of the  amount  thereof  which  then
               would have been  required  to be  deposited  for the  purpose for
               which such U.S.  Government  Obligations  or  Foreign  Government
               Obligations or money were  deposited or received.  This provision
               shall  not  authorize  the  sale  by  the  Trustee  of  any  U.S.
               Government  Obligations or Foreign  Government  Obligations  held
               under this Indenture.

Section 8.3.      Legal Defeasance of Securities of any Series.

                  Unless this Section 8.3 is otherwise specified pursuant to
Section 2.2.21 to be inapplicable to Securities of any Series, the Company shall
be deemed to have paid and discharged the entire indebtedness on all the
outstanding Securities of such Series on the 91st day after the date of the
deposit referred to in subparagraph (d) hereof, and the provisions of this
Indenture, as it relates to such outstanding Securities of such Series, shall no
longer be in effect (and the Trustee, at the expense of the Company, shall, at
Company Request, execute proper instruments acknowledging the same), except as
to:


                                       33


          (a)  the rights of Holders of  Securities  of such  Series to receive,
               from the trust funds  described in subparagraph  (d) hereof,  (i)
               payment of the principal of and each  installment of principal of
               and interest on the outstanding  Securities of such Series on the
               Stated  Maturity of such principal or installment of principal or
               interest  and (ii) the  benefit  of any  mandatory  sinking  fund
               payments  applicable to the  Securities of such Series on the day
               on which such payments are due and payable in accordance with the
               terms of this Indenture and the Securities of such Series;

          (b)  the provisions of Sections 2.4, 2.7, 2.8, 8.2, 8.3 and 8.5; and

          (c)  the  rights,   powers,   trust  and  immunities  of  the  Trustee
               hereunder;

provided that, the following conditions shall have been satisfied:

          (d)  the  Company  shall  have  deposited  or caused  to be  deposited
               irrevocably  with the  Trustee  as trust  funds in trust  for the
               purpose of making the following payments, specifically pledged as
               security for and  dedicated  solely to the benefit of the Holders
               of such  Securities  (i) in the case of Securities of such Series
               denominated  in Dollars,  cash in Dollars (or such other money or
               currencies  as shall then be legal  tender in the United  States)
               and/or  U.S.  Government  Obligations,  or  (ii)  in the  case of
               Securities  of such  Series  denominated  in a  Foreign  Currency
               (other  than  a  composite   currency),   money  and/or   Foreign
               Government Obligations, which through the payment of interest and
               principal in respect  thereof,  in  accordance  with their terms,
               will  provide  (and  without  reinvestment  and  assuming  no tax
               liability  will be imposed on such  Trustee),  not later than one
               day  before the due date of any  payment  of money,  an amount in
               cash, sufficient,  in the opinion of a nationally recognized firm
               of  independent  public   accountants   expressed  in  a  written
               certification  thereof  delivered  to the  Trustee,  to  pay  and
               discharge  each  installment  of principal  (including  mandatory
               sinking fund or analogous  payments) of and interest,  if any, on
               all the Securities of such Series on the dates such  installments
               of interest or principal are due;

          (e)  such  deposit  will not  result in a breach or  violation  of, or
               constitute a default under, this Indenture or any other agreement
               or  instrument  to which the Company is a party or by which it is
               bound;

          (f)  no Default or Event of Default with respect to the  Securities of
               such Series shall have  occurred and be continuing on the date of
               such  deposit or during  the period  ending on the 91st day after
               such date;

          (g)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  and an Opinion of Counsel to the effect that (i) the
               Company has received  from,  or there has been  published by, the
               Internal  Revenue  Service  a ruling,  or (ii)  since the date of
               execution  of this  Indenture,  there  has been a  change  in the
               applicable  Federal  income tax law, in either case to the effect
               that,  and based  thereon such Opinion of Counsel  shall  confirm
               that,  the  Holders of the  Securities  of such  Series  will not
               recognize income, gain or loss for Federal income tax purposes as
               a result of such  deposit,  defeasance  and discharge and will be
               subject to Federal  income tax on the same amount and in the same
               manner  and at the same times as would have been the case if such
               deposit, defeasance and discharge had not occurred;


                                       34


          (h)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  stating that the deposit was not made by the Company
               with the intent of  preferring  the Holders of the  Securities of
               such Series over any other  creditors  of the company or with the
               intent of defeating,  hindering, delaying or defrauding any other
               creditors of the Company;

          (i)  such  deposit  shall not  result in the trust  arising  from such
               deposit  constituting  an  investment  company (as defined in the
               Investment Company Act of 1940, as amended),  or such trust shall
               be qualified under such Act or exempt from regulation thereunder;
               and

          (j)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  and an Opinion of  Counsel,  each  stating  that all
               conditions  precedent  provided  for  relating to the  defeasance
               contemplated by this Section have been complied with.

Section 8.4.      Covenant Defeasance.

                  Unless this Section 8.4 is otherwise specified pursuant to
Section 2.2.21 to be inapplicable to Securities of any Series, on and after the
91st day after the date of the deposit referred to in subparagraph (a) hereof,
the Company may omit to comply with any term, provision or condition set forth
under Sections 4.2, 4.3, 4.4, 4.5, 4.6, and 5.1 as well as any additional
covenants contained in a supplemental indenture hereto for a particular Series
of Securities or a Board Resolution or an Officers' Certificate delivered
pursuant to Section 2.2.21 (and the failure to comply with any such covenants
shall not constitute a Default or Event of Default under Section 6.1) and the
occurrence of any event described in clause (e) of Section 6.1 shall not
constitute a Default or Event of Default hereunder, with respect to the
Securities of such Series, provided that the following conditions shall have
been satisfied:

          (a)  With  reference to this Section 8.4, the Company has deposited or
               caused to be irrevocably deposited (except as provided in Section
               8.2(c))  with the Trustee as trust  funds in trust,  specifically
               pledged as security for, and dedicated  solely to, the benefit of
               the Holders of such  Securities  (i) in the case of Securities of
               such  Series  denominated  in  Dollars,  cash in Dollars (or such
               other money or  currencies  as shall then be legal  tender in the
               United States) and/or U.S. Government Obligations, or (ii) in the
               case  of  Securities  of such  Series  denominated  in a  Foreign
               Currency (other than a composite currency),  money and/or Foreign
               Government Obligations, which through the payment of interest and
               principal in respect  thereof,  in  accordance  with their terms,
               will  provide  (and  without  reinvestment  and  assuming  no tax
               liability  will be imposed on such  Trustee),  not later than one
               day  before the due date of any  payment  of money,  an amount in
               cash, sufficient,  in the opinion of a nationally recognized firm
               of  independent  certified  public  accountants  expressed  in  a
               written  certification  thereof delivered to the Trustee,  to pay
               principal and interest, if any, on and any mandatory sinking fund
               in respect  of the  Securities  of such  Series on the dates such
               installments of interest or principal are due;

          (b)  Such  deposit  will not  result in a breach or  violation  of, or
               constitute a default under, this Indenture or any other agreement
               or  instrument  to which the Company is a party or by which it is
               bound;


                                       35


          (c)  No Default or Event of Default with respect to the  Securities of
               such Series shall have  occurred and be continuing on the date of
               such  deposit or during  the period  ending on the 91st day after
               such date;

          (d)  the  Company  shall have  delivered  to the Trustee an Opinion of
               Counsel  confirming that Holders of the Securities of such Series
               will not recognize  income,  gain or loss for federal  income tax
               purposes as a result of such deposit and  defeasance  and will be
               subject to federal  income tax on the same  amounts,  in the same
               manner  and at the same times as would have been the case if such
               deposit and defeasance had not occurred;

          (e)  the Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  stating the deposit was not made by the Company with
               the intent of  preferring  the Holders of the  Securities of such
               Series over any other creditors of the Company or with the intent
               of  defeating,   hindering,  delaying  or  defrauding  any  other
               creditors of the Company; and

          (f)  The Company  shall have  delivered  to the  Trustee an  Officers'
               Certificate  and an Opinion of  Counsel,  each  stating  that all
               conditions   precedent   herein  provided  for  relating  to  the
               defeasance contemplated by this Section have been complied with.

Section 8.5.      Repayment to Company.

                  The Trustee and the Paying Agent shall pay to the Company upon
request any money held by them for the payment of principal and interest that
remains unclaimed for two years. After that, Securityholders entitled to the
money must look to the Company for payment as general creditors unless an
applicable abandoned property law designates another person.

Section 8.6.      Reinstatement.

                  If the Trustee or Paying Agent is unable to apply any money or
U.S. Government Obligations in accordance with Sections 8.1, 8.3 or 8.4, as the
case may be, by reason of any legal proceeding or by reason of any order or
judgment of any court or governmental authority enjoining, restraining or
otherwise prohibiting such application, the Company's obligations under this
Indenture and the Securities shall be revived and reinstated as though no
deposit had occurred pursuant to Section 8.1, 8.3 or 8.4, as the case may be,
until such time as the Trustee or Paying Agent is permitted to apply all such
money or U.S. Government Obligations in accordance with Section 8.1, 8.3 or 8.4,
as the case may be; provided, however, that if the Company makes any payment of
principal of, premium, if any, or interest on any Securities because of
reinstatement of its obligations, the Company shall be subrogated to the rights
of the holders of such Securities to receive such payment from the money or U.S.
Government Obligations held by the Trustee or Paying Agent.


                                       36


                                  ARTICLE IX.
                             AMENDMENTS AND WAIVERS

Section 9.1.      Without Consent of Holders.

                  The Company and the Trustee may amend or supplement this
Indenture or the Securities of one or more Series without the consent of any
Securityholder:

          (a)  to cure any ambiguity, defect or inconsistency;

          (b)  to comply with Article V;

          (c)  to provide  for  uncertificated  Securities  in addition to or in
               place of certificated Securities;

          (d)  to make any change that does not  adversely  affect the rights of
               any Securityholder;

          (e)  to provide for the issuance of and  establish  the form and terms
               and  conditions  of Securities of any Series as permitted by this
               Indenture;

          (f)  to  evidence  and  provide  for  the  acceptance  of  appointment
               hereunder by a successor  Trustee with respect to the  Securities
               of one  or  more  Series  and  to  add  to or  change  any of the
               provisions of this Indenture as shall be necessary to provide for
               or facilitate the  administration of the trusts hereunder by more
               than one Trustee; or

          (g)  to  comply  with  requirements  of the SEC in order to  effect or
               maintain the qualification of this Indenture under the TIA.

Section 9.2.      With Consent of Holders.

                  The Company and the Trustee may enter into a supplemental
indenture with the written consent of the Holders of at least a majority in
principal amount of the outstanding Securities of each Series affected by such
supplemental indenture (including consents obtained in connection with a tender
offer or exchange offer for the Securities of such Series), for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of any supplemental indenture or of modifying in
any manner the rights of the Securityholders of each such Series. Except as
provided in Section 6.13, the Holders of at least a majority in principal amount
of the outstanding Securities of each Series affected by such waiver by notice
to the Trustee (including consents obtained in connection with a tender offer or
exchange offer for the Securities of such Series) may waive compliance by the
Company with any provision of this Indenture or the Securities with respect to
such Series.

                  It shall not be necessary for the consent of the Holders of
Securities under this Section 9.2 to approve the particular form of any proposed
supplemental indenture or waiver, but it shall be sufficient if such consent
approves the substance thereof. After a supplemental indenture or waiver under
this Section becomes effective, the Company shall mail to the Holders of
Securities affected thereby and, if any Bearer Securities affected thereby are
outstanding, publish on one occasion in an Authorized Newspaper, a notice
briefly describing the supplemental indenture or waiver. Any failure by the
Company to mail or publish such notice, or any defect therein, shall not,
however, in any way impair or affect the validity of any such supplemental
indenture or waiver.


                                       37


Section 9.3.      Limitations.

                  Without the consent of each Securityholder affected, an
amendment or waiver may not:

          (a)  change the amount of Securities  whose Holders must consent to an
               amendment, supplement or waiver;

          (b)  reduce  the rate of or extend the time for  payment  of  interest
               (including default interest) on any Security;

          (c)  reduce  the  principal  or  change  the  Stated  Maturity  of any
               Security or reduce the amount of, or postpone the date fixed for,
               the payment of any sinking fund or analogous obligation;

          (d)  reduce the principal amount of Discount  Securities  payable upon
               acceleration of the maturity thereof;

          (e)  waive a  Default  or  Event  of  Default  in the  payment  of the
               principal  of or  interest,  if any,  on any  Security  (except a
               rescission of acceleration of the Securities of any Series by the
               Holders  of at  least  a  majority  in  principal  amount  of the
               outstanding Securities of such Series and a waiver of the payment
               default that resulted from such acceleration);

          (f)  make  the  principal  of or  interest,  if any,  on any  Security
               payable in any currency other than that stated in the Security;

          (g)  make any change in Sections 6.8, 6.13, 9.3 (this sentence), 10.15
               or 10.16; or

          (h)  waive a redemption payment with respect to any Security or change
               any of the  provisions  with  respect  to the  redemption  of any
               Securities.

Section 9.4.      Compliance with Trust Indenture Act.

                  Every amendment to this Indenture or the Securities of one or
more Series shall be set forth in a supplemental indenture hereto that complies
with the TIA as then in effect.

Section 9.5.      Revocation and Effect of Consents.

                  Until an amendment or waiver becomes effective, a consent to
it by a Holder of a Security is a continuing consent by the Holder and every
subsequent Holder of a Security or portion of a Security that evidences the same
debt as the consenting Holder's Security, even if notation of the consent is not
made on any Security. However, any such Holder or subsequent Holder may revoke
the consent as to his Security or portion of a Security if the Trustee receives
the notice of revocation before the date the amendment or waiver becomes
effective.


                                       38


                  Any amendment or waiver once effective shall bind every
Securityholder of each Series affected by such amendment or waiver unless it is
of the type described in any of clauses (a) through (g) of Section 9.3. In that
case, the amendment or waiver shall bind each Holder of a Security who has
consented to it and every subsequent Holder of a Security or portion of a
Security that evidences the same debt as the consenting Holder's Security.

Section 9.6.      Notation on or Exchange of Securities.

                  The Trustee may place an appropriate notation about an
amendment or waiver on any Security of any Series thereafter authenticated. The
Company in exchange for Securities of that Series may issue and the Trustee
shall authenticate upon request new Securities of that Series that reflect the
amendment or waiver.

Section 9.7.      Trustee Protected.

                  In executing, or accepting the additional trusts created by,
any supplemental indenture permitted by this Article or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and (subject to Section 7.1) shall be fully protected in relying
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture. The Trustee shall sign
all supplemental indentures, except that the Trustee need not sign any
supplemental indenture that adversely affects its rights.

                                   ARTICLE X.
                                  MISCELLANEOUS

Section 10.1.     Trust Indenture Act Controls.

                  If any provision of this Indenture limits, qualifies, or
conflicts with another provision which is required or deemed to be included in
this Indenture by the TIA, such required or deemed provision shall control.

Section 10.2.     Notices.

                  Any notice or communication by the Company or the Trustee to
the other is duly given if in writing and delivered in person or mailed by
first-class mail:

if to the Company:

                  Geron Corporation
                  230 Constitution Drive
                  Menlo Park, CA  94025
                  Attention: General Counsel

if to the Trustee:

                  [Name of Trustee]
                  [Address]
                  -------------------------
                  -------------------------
                  Attention: ______________


                                       39


                  The Company or the Trustee by notice to the other may
designate additional or different addresses for subsequent notices or
communications.

                  Any notice or communication to a Securityholder shall be
mailed by first-class mail to his address shown on the register kept by the
Registrar and, if any Bearer Securities are outstanding, published in an
Authorized Newspaper. Failure to mail a notice or communication to a
Securityholder of any Series or any defect in it shall not affect its
sufficiency with respect to other Securityholders of that or any other Series.

                  If a notice or communication is mailed or published in the
manner provided above, within the time prescribed, it is duly given, whether or
not the Securityholder receives it.

                  If the Company mails a notice or communication to
Securityholders, it shall mail a copy to the Trustee and each Agent at the same
time.

Section 10.3.     Communication by Holders with Other Holders.

                  Securityholders of any Series may communicate pursuant to TIA
Section 312(b) with other Securityholders of that Series or any other Series
with respect to their rights under this Indenture or the Securities of that
Series or all Series. The Company, the Trustee, the Registrar and anyone else
shall have the protection of TIA Section 312(c).

Section 10.4.     Certificate and Opinion as to Conditions Precedent.

                  Upon any request or application by the Company to the Trustee
to take any action under this Indenture, the Company shall furnish to the
Trustee:

          (a)  an  Officers'  Certificate  stating  that,  in the opinion of the
               signers, all conditions  precedent,  if any, provided for in this
               Indenture  relating to the  proposed  action  have been  complied
               with; and

          (b)  an  Opinion  of  Counsel  stating  that,  in the  opinion of such
               counsel, all such conditions precedent have been complied with.

Section 10.5.     Statements Required in Certificate or Opinion.

                  Each certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than a certificate
provided pursuant to TIA Section 314(a)(4)) shall comply with the provisions of
TIA Section 314(e) and shall include:

          (a)  a statement  that the person making such  certificate  or opinion
               has read such covenant or condition;

          (b)  a brief  statement as to the nature and scope of the  examination
               or investigation  upon which the statements or opinions contained
               in such certificate or opinion are based;


                                       40


          (c)  a statement that, in the opinion of such person, he has made such
               examination  or  investigation  as is  necessary to enable him to
               express an informed opinion as to whether or not such covenant or
               condition has been complied with; and

          (d)  a statement  as to whether or not, in the opinion of such person,
               such condition or covenant has been complied with.

Section 10.6.     Rules by Trustee and Agents.

                  The Trustee may make reasonable rules for action by or a
meeting of Securityholders of one or more Series. Any Agent may make reasonable
rules and set reasonable requirements for its functions.

Section 10.7.     Legal Holidays.

                  Unless otherwise provided by Board Resolution, Officers'
Certificate or supplemental indenture for a particular Series, a "Legal Holiday"
is any day that is not a Business Day. If a payment date is a Legal Holiday at a
place of payment, payment may be made at that place on the next succeeding day
that is not a Legal Holiday, and no interest shall accrue for the intervening
period.

Section 10.8.     No Recourse Against Others.

                  A director, officer, employee or stockholder, as such, of the
Company shall not have any liability for any obligations of the Company under
the Securities or the Indenture or for any claim based on, in respect of or by
reason of such obligations or their creation. Each Securityholder by accepting a
Security waives and releases all such liability. The waiver and release are part
of the consideration for the issue of the Securities.

Section 10.9.     Counterparts.

                  This Indenture may be executed in any number of counterparts
and by the parties hereto in separate counterparts, each of which when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same agreement.

Section 10.10.    Governing Laws.

                  THIS INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY THE
LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED
IN SUCH STATE, WITHOUT REGARD TO THE CONFLICT OF LAWS PROVISIONS THEREOF.

Section 10.11.    No Adverse Interpretation of Other Agreements.

                  This Indenture may not be used to interpret another indenture,
loan or debt agreement of the Company or a Subsidiary. Any such indenture, loan
or debt agreement may not be used to interpret this Indenture.


                                       41


Section 10.12.    Successors.

                  All agreements of the Company in this Indenture and the
Securities shall bind its successor. All agreements of the Trustee in this
Indenture shall bind its successor.

Section 10.13.    Severability.

                  In case any provision in this Indenture or in the Securities
shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

Section 10.14.    Table of Contents, Headings, Etc.

                  The Table of Contents, Cross Reference Table, and headings of
the Articles and Sections of this Indenture have been inserted for convenience
of reference only, are not to be considered a part hereof, and shall in no way
modify or restrict any of the terms or provisions hereof.

Section 10.15.    Securities in a Foreign Currency or in ECU.

                  Unless otherwise specified in a Board Resolution, a
supplemental indenture hereto or an Officers' Certificate delivered pursuant to
Section 2.2 of this Indenture with respect to a particular Series of Securities,
whenever for purposes of this Indenture any action may be taken by the Holders
of a specified percentage in aggregate principal amount of Securities of all
Series or all Series affected by a particular action at the time outstanding
and, at such time, there are outstanding Securities of any Series which are
denominated in a coin or currency other than Dollars (including ECUs), then the
principal amount of Securities of such Series which shall be deemed to be
outstanding for the purpose of taking such action shall be that amount of
Dollars that could be obtained for such amount at the Market Exchange Rate at
such time. For purposes of this Section 10.15, "Market Exchange Rate" shall mean
the noon Dollar buying rate in New York City for cable transfers of that
currency as published by the Federal Reserve Bank of New York; provided,
however, in the case of ECUs, Market Exchange Rate shall mean the rate of
exchange determined by the Commission of the European Union (or any successor
thereto) as published in the Official Journal of the European Union (such
publication or any successor publication, the "Journal"). If such Market
Exchange Rate is not available for any reason with respect to such currency, the
Trustee shall use, in its sole discretion and without liability on its part,
such quotation of the Federal Reserve Bank of New York or, in the case of ECUs,
the rate of exchange as published in the Journal, as of the most recent
available date, or quotations or, in the case of ECUs, rates of exchange from
one or more major banks in The City of New York or in the country of issue of
the currency in question or, in the case of ECUs, in Luxembourg or such other
quotations or, in the case of ECUs, rates of exchange as the Trustee, upon
consultation with the Company, shall deem appropriate. The provisions of this
paragraph shall apply in determining the equivalent principal amount in respect
of Securities of a Series denominated in currency other than Dollars in
connection with any action taken by Holders of Securities pursuant to the terms
of this Indenture.


                                       42


                  All decisions and determinations of the Trustee regarding the
Market Exchange Rate or any alternative determination provided for in the
preceding paragraph shall be in its sole discretion and shall, in the absence of
manifest error, be conclusive to the extent permitted by law for all purposes
and irrevocably binding upon the Company and all Holders.

Section 10.16.    Judgment Currency.

                  The Company agrees, to the fullest extent that it may
effectively do so under applicable law, that (a) if for the purpose of obtaining
judgment in any court it is necessary to convert the sum due in respect of the
principal of or interest or other amount on the Securities of any Series (the
"Required Currency") into a currency in which a judgment will be rendered (the
"Judgment Currency"), the rate of exchange used shall be the rate at which in
accordance with normal banking procedures the Trustee could purchase in The City
of New York the Required Currency with the Judgment Currency on the day on which
final unappealable judgment is entered, unless such day is not a New York
Banking Day, then, the rate of exchange used shall be the rate at which in
accordance with normal banking procedures the Trustee could purchase in The City
of New York the Required Currency with the Judgment Currency on the New York
Banking Day preceding the day on which final unappealable judgment is entered
and (b) its obligations under this Indenture to make payments in the Required
Currency (i) shall not be discharged or satisfied by any tender, any recovery
pursuant to any judgment (whether or not entered in accordance with Subsection
(a)), in any currency other than the Required Currency, except to the extent
that such tender or recovery shall result in the actual receipt, by the payee,
of the full amount of the Required Currency expressed to be payable in respect
of such payments, (ii) shall be enforceable as an alternative or additional
cause of action for the purpose of recovering in the Required Currency the
amount, if any, by which such actual receipt shall fall short of the full amount
of the Required Currency so expressed to be payable, and (iii) shall not be
affected by judgment being obtained for any other sum due under this Indenture.
For purposes of the foregoing, "New York Banking Day" means any day except a
Saturday, Sunday or a legal holiday in The City of New York on which banking
institutions are authorized or required by law, regulation or executive order to
close.

                                   ARTICLE XI.
                                  SINKING FUNDS

Section 11.1.     Applicability of Article.

                  The provisions of this Article shall be applicable to any
sinking fund for the retirement of the Securities of a Series, except as
otherwise permitted or required by any form of Security of such Series issued
pursuant to this Indenture.

                  The minimum amount of any sinking fund payment provided for by
the terms of the Securities of any Series is herein referred to as a "mandatory
sinking fund payment" and any other amount provided for by the terms of
Securities of such Series is herein referred to as an "optional sinking fund
payment." If provided for by the terms of Securities of any Series, the cash
amount of any sinking fund payment may be subject to reduction as provided in
Section 11.2. Each sinking fund payment shall be applied to the redemption of
Securities of any Series as provided for by the terms of the Securities of such
Series.


                                       43


Section 11.2.     Satisfaction of Sinking Fund Payments with Securities.

                  The Company may, in satisfaction of all or any part of any
sinking fund payment with respect to the Securities of any Series to be made
pursuant to the terms of such Securities (1) deliver outstanding Securities of
such Series to which such sinking fund payment is applicable (other than any of
such Securities previously called for mandatory sinking fund redemption) and (2)
apply as credit Securities of such Series to which such sinking fund payment is
applicable and which have been redeemed either at the election of the Company
pursuant to the terms of such Series of Securities (except pursuant to any
mandatory sinking fund) or through the application of permitted optional sinking
fund payments or other optional redemptions pursuant to the terms of such
Securities, provided that such Securities have not been previously so credited.
Such Securities shall be received by the Trustee, together with an Officers'
Certificate with respect thereto, not later than 15 days prior to the date on
which the Trustee begins the process of selecting Securities for redemption, and
shall be credited for such purpose by the Trustee at the price specified in such
Securities for redemption through operation of the sinking fund and the amount
of such sinking fund payment shall be reduced accordingly. If as a result of the
delivery or credit of Securities in lieu of cash payments pursuant to this
Section 11.2, the principal amount of Securities of such Series to be redeemed
in order to exhaust the aforesaid cash payment shall be less than $100,000, the
Trustee need not call Securities of such Series for redemption, except upon
receipt of a Company Order that such action be taken, and such cash payment
shall be held by the Trustee or a Paying Agent and applied to the next
succeeding sinking fund payment, provided, however, that the Trustee or such
Paying Agent shall from time to time upon receipt of a Company Order pay over
and deliver to the Company any cash payment so being held by the Trustee or such
Paying Agent upon delivery by the Company to the Trustee of Securities of that
Series purchased by the Company having an unpaid principal amount equal to the
cash payment required to be released to the Company.

Section 11.3.     Redemption of Securities for Sinking Fund.

                  Not less than 45 days (unless otherwise indicated in the Board
Resolution, supplemental indenture hereto or Officers' Certificate in respect of
a particular Series of Securities) prior to each sinking fund payment date for
any Series of Securities, the Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing mandatory sinking fund
payment for that Series pursuant to the terms of that Series, the portion
thereof, if any, which is to be satisfied by payment of cash and the portion
thereof, if any, which is to be satisfied by delivering and crediting of
Securities of that Series pursuant to Section 11.2, and the optional amount, if
any, to be added in cash to the next ensuing mandatory sinking fund payment, and
the Company shall thereupon be obligated to pay the amount therein specified.
Not less than 30 days (unless otherwise indicated in the Board Resolution,
Officers' Certificate or supplemental indenture in respect of a particular
Series of Securities) before each such sinking fund payment date the Trustee
shall select the Securities to be redeemed upon such sinking fund payment date
in the manner specified in Section 3.2 and cause notice of the redemption
thereof to be given in the name of and at the expense of the Company in the
manner provided in Section 3.3. Such notice having been duly given, the
redemption of such Securities shall be made upon the terms and in the manner
stated in Sections 3.4, 3.5 and 3.6.


                                       44


                                  ARTICLE XII.
                           SUBORDINATION OF SECURITIES

Section 12.1.     Agreement of Subordination.

                  The Company covenants and agrees, and each Holder of
Securities issued hereunder by his acceptance thereof likewise covenants and
agrees, that all Securities shall be issued subject to the provisions of this
Article XII; and each Person holding any Security, whether upon original issue
or upon transfer, assignment or exchange thereof, accepts and agrees to be bound
by such provisions.

                  The payment of the principal of, premium, if any, and interest
on all Securities (including, but not limited to, the redemption price with
respect to the Securities called for redemption in accordance with Article III
as provided in the Indenture) issued hereunder shall, to the extent and in the
manner hereinafter set forth, be subordinated and subject in right of payment to
the prior payment in full of all Senior Indebtedness, whether outstanding at the
date of this Indenture or thereafter incurred.

                  No provision of this Article XII shall prevent the occurrence
of any default or Event of Default hereunder.

Section 12.2.     Payments to Holders.

                  No payment shall be made with respect to the principal of, or
premium, if any, or interest on the Securities (including, but not limited to,
the redemption price with respect to the Securities to be called for redemption
in accordance with Article III as provided in the Indenture), except payments
and distributions made by the Trustee as permitted by the first or second
paragraph of Section 12.5, if:

               (i)  a default in the payment of  principal,  premium,  interest,
                    rent or other  obligations  due on any  Senior  Indebtedness
                    occurs  and  is  continuing  (or,  in  the  case  of  Senior
                    Indebtedness  for which  there is a period of grace,  in the
                    event of such a default that continues  beyond the period of
                    grace,  if  any,   specified  in  the  instrument  or  lease
                    evidencing such Senior Indebtedness),  unless and until such
                    default shall have been cured or waived or shall have ceased
                    to exist; or

               (ii) a default,  other than a payment  default,  on a  Designated
                    Senior  Indebtedness  occurs  and is  continuing  that  then
                    permits  holders of such Designated  Senior  Indebtedness to
                    accelerate its maturity and the Trustee receives a notice of
                    the   default  (a   "Payment   Blockage   Notice")   from  a
                    Representative or the Company.

                  If the Trustee receives any Payment Blockage Notice pursuant
to clause (ii) above, no subsequent Payment Blockage Notice shall be effective
for purposes of this Section unless and until (A) at least 365 days shall have
elapsed since the initial effectiveness of the immediately prior Payment
Blockage Notice, and (B) all scheduled payments of principal, premium, if any,
and interest on the Securities that have come due have been paid in full in
cash. No nonpayment default that existed or was continuing on the date of
delivery of any Payment Blockage Notice to the Trustee shall be, or be made, the
basis for a subsequent Payment Blockage Notice.


                                       45


                  The Company may and shall resume payments on and distributions
in respect of the Securities upon the earlier of:

                  (1) the date upon which the default is cured or waived or
ceases to exist, or

                  (2) in the case of a default referred to in clause (ii)
above, 179 days pass after notice is received if the maturity of such Designated
Senior Indebtedness has not been accelerated, unless this Article XII otherwise
prohibits the payment or distribution at the time of such payment or
distribution.

                  Upon any payment by the Company, or distribution of assets of
the Company of any kind or character, whether in cash, property or securities,
to creditors upon any dissolution or winding-up or liquidation or reorganization
of the Company, whether voluntary or involuntary or in bankruptcy, insolvency,
receivership or other proceedings, all amounts due or to become due upon all
Senior Indebtedness shall first be paid in full in cash or other payment
satisfactory to the holders of such Senior Indebtedness, or payment thereof in
accordance with its terms provided for in cash or other payment satisfactory to
the holders of such Senior Indebtedness, before any payment is made on account
of the principal of, premium, if any, or interest on the Securities (except
payments made pursuant to Article VI from monies deposited with the Trustee
pursuant thereto prior to commencement of proceedings for such dissolution,
winding-up, liquidation or reorganization); and upon any such dissolution or
winding-up or liquidation or reorganization of the Company or bankruptcy,
insolvency, receivership or other proceeding, any payment by the Company, or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities, to which the Holders of the Securities or the Trustee
would be entitled, except for the provision of this Article XII, shall (except
as aforesaid) be paid by the Company or by any receiver, trustee in bankruptcy,
liquidating trustee, agent or other Person making such payment or distribution,
or by the Holders of the Securities or by the Trustee under this Indenture if
received by them or it, directly to the holders of Senior Indebtedness (pro rata
to such holders on the basis of the respective amounts of Senior Indebtedness
held by such holders, or as otherwise required by law or a court order) or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing any Senior Indebtedness
may have been issued, as their respective interests may appear, to the extent
necessary to pay all Senior Indebtedness in full, in cash or other payment
satisfactory to the holders of such Senior Indebtedness, after giving effect to
any concurrent payment or distribution to or for the holders of Senior
Indebtedness, before any payment or distribution or provision therefor is made
to the Holders of the Securities or to the Trustee.

                  For purposes of this Article XII, the words, "cash, property
or securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment, the payment of which
is subordinated at least to the extent provided in this Article XII with respect
to the Securities to the payment of all Senior Indebtedness which may at the
time be outstanding; provided that (i) the Senior Indebtedness is assumed by the
new corporation, if any, resulting from any reorganization or readjustment, and


                                       46


(ii) the rights of the holders of Senior Indebtedness (other than leases which
are not assumed by the Company or the new corporation, as the case may be) are
not, without the consent of such holders, altered by such reorganization or
readjustment. The consolidation of the Company with, or the merger of the
Company into, another corporation or the liquidation or dissolution of the
Company following the conveyance or transfer of its property as an entirety, or
substantially as an entirety, to another corporation upon the terms and
conditions provided for in Article V shall not be deemed a dissolution,
winding-up, liquidation or reorganization for the purposes of this Section 12.2
if such other corporation shall, as a part of such consolidation, merger,
conveyance or transfer, comply with the conditions stated in Article V.

                  In the event of the acceleration of the Securities because of
an Event of Default, no payment or distribution shall be made to the Trustee or
any Holder of Securities in respect of the principal of, premium, if any, or
interest on the Securities (including, but not limited to, the redemption price
with respect to the Securities called for redemption in accordance with Article
III as provided in the Indenture), except payments and distributions made by the
Trustee as permitted by the first or second paragraph of Section 12.5, until all
Senior Indebtedness has been paid in full in cash or other payment satisfactory
to the holders of Senior Indebtedness or such acceleration is rescinded in
accordance with the terms of this Indenture. If payment of the Securities is
accelerated because of an Event of Default, the Company shall promptly notify
holders of Senior Indebtedness of the acceleration at the address set forth in
the notice from the Agent (or successor agent) to the Trustee as being the
address to which the Trustee should send its notice pursuant to this Section
12.2, unless there are no payment obligations of the Company thereunder and all
obligations thereunder to extend credit have been terminated or expired.

                  In the event that, notwithstanding the foregoing provisions,
any payment or distribution of assets of the Company of any kind or character,
whether in cash, property or securities (including, without limitation, by way
of setoff or otherwise), prohibited by the foregoing, shall be received by the
Trustee or the Holders of the Securities before all Senior Indebtedness is paid
in full in cash or other payment satisfactory to the holders of such Senior
Indebtedness, or provision is made for such payment thereof in accordance with
its terms in cash or other payment satisfactory to the holders of such Senior
Indebtedness, such payment or distribution shall be held in trust for the
benefit of and shall be paid over or delivered to the holders of Senior
Indebtedness or their representative or representatives, or to the trustee or
trustees under any indenture pursuant to which any instruments evidencing any
Senior Indebtedness may have been issued, as their respective interests may
appear, as calculated by the Company, for application to the payment of all
Senior Indebtedness remaining unpaid to the extent necessary to pay all Senior
Indebtedness in full in cash or other payment satisfactory to the holders of
such Senior Indebtedness, after giving effect to any concurrent payment or
distribution to or for the holders of such Senior Indebtedness.

                  Nothing in this Section 12.2 shall apply to claims of, or
payments to, the Trustee under or pursuant to Section 7.7. This Section 12.2
shall be subject to the further provisions of Section 12.5.


                                       47


Section 12.3.     Subrogation of Securities.

                  Subject to the payment in full of all Senior Indebtedness, the
rights of the Holders of the Securities shall be subrogated to the extent of the
payments or distributions made to the holders of such Senior Indebtedness
pursuant to the provisions of this Article XII (equally and ratably with the
holders of all indebtedness of the Company which by its express terms is
subordinated to other indebtedness of the Company to substantially the same
extent as the Securities are subordinated and is entitled to like rights of
subrogation) to the rights of the holders of Senior Indebtedness to receive
payments or distributions of cash, property or securities of the Company
applicable to the Senior Indebtedness until the principal, premium, if any, and
interest on the Securities shall be paid in full; and, for the purposes of such
subrogation, no payments or distributions to the holders of the Senior
Indebtedness of any cash, property or securities to which the Holders of the
Securities or the Trustee would be entitled except for the provisions of this
Article XII, and no payment pursuant to the provisions of this Article XII, to
or for the benefit of the holders of Senior Indebtedness by Holders of the
Securities or the Trustee, shall, as between the Company, its creditors other
than holders of Senior Indebtedness, and the Holders of the Securities, be
deemed to be a payment by the Company to or on account of the Senior
Indebtedness; and no payments or distributions of cash, property or securities
to or for the benefit of the Holders of the Securities pursuant to the
subrogation provisions of this Article XII, which would otherwise have been paid
to the holders of Senior Indebtedness shall be deemed to be a payment by the
Company to or for the account of the Securities. It is understood that the
provisions of this Article XII are and are intended solely for the purposes of
defining the relative rights of the Holders of the Securities, on the one hand,
and the holders of the Senior Indebtedness, on the other hand.

                  Nothing contained in this Article XII or elsewhere in this
Indenture or in the Securities is intended to or shall impair, as among the
Company, its creditors other than the holders of Senior Indebtedness, and the
Holders of the Securities, the obligation of the Company, which is absolute and
unconditional, to pay to the Holders of the Securities the principal of (and
premium, if any) and interest on the Securities as and when the same shall
become due and payable in accordance with their terms, or is intended to or
shall affect the relative rights of the Holders of the Securities and creditors
of the Company other than the holders of the Senior Indebtedness, nor shall
anything herein or therein prevent the Trustee or the Holder of any Security
from exercising all remedies otherwise permitted by applicable law upon default
under this Indenture, subject to the rights, if any, under this Article XII of
the holders of Senior Indebtedness in respect of cash, property or securities of
the Company received upon the exercise of any such remedy.

                  Upon any payment or distribution of assets of the Company
referred to in this Article XII, the Trustee, subject to the provisions of
Section 7.1, and the Holders of the Securities shall be entitled to rely upon
any order or decree made by any court of competent jurisdiction in which such
bankruptcy, dissolution, winding-up, liquidation or reorganization proceedings
are pending, or a certificate of the receiver, trustee in bankruptcy,
liquidating trustee, agent or other person making such payment or distribution,
delivered to the Trustee or to the Holders of the Securities, for the purpose of
ascertaining the persons entitled to participate in such distribution, the
holders of the Senior Indebtedness and other indebtedness of the Company, the
amount thereof or payable thereon and all other facts pertinent thereto or to
this Article XII.


                                       48


Section 12.4.     Authorization to Effect Subordination.

                  Each Holder of a Security by the holder's acceptance thereof
authorizes and directs the Trustee on the holder's behalf to take such action as
may be necessary or appropriate to effectuate the subordination as provided in
this Article XII and appoints the Trustee to act as the holder's
attorney-in-fact for any and all such purposes. If the Trustee does not file a
proper proof of claim or proof of debt in the form required in any proceeding
referred to in Section 6.3 hereof at least 30 days before the expiration of the
time to file such claim, the holders of any Senior Indebtedness or their
representatives are hereby authorized to file an appropriate claim for and on
behalf of the Holders of the Securities.

Section 12.5.     Notice to Trustee.

                  The Company shall give prompt written notice in the form of an
Officers' Certificate to a Responsible Officer of the Trustee and to any paying
agent of any fact known to the Company which would prohibit the making of any
payment of monies to or by the Trustee or any paying agent in respect of the
Securities pursuant to the provisions of this Article XII. Notwithstanding the
provisions of this Article XII or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts which
would prohibit the making of any payment of monies to or by the Trustee in
respect of the Securities pursuant to the provisions of this Article XII, unless
and until a Responsible Officer of the Trustee shall have received written
notice thereof at the Corporate Trust Office from the Company (in the form of an
Officers' Certificate) or a Representative or a holder or holders of Senior
Indebtedness or from any trustee thereof; and before the receipt of any such
written notice, the Trustee, subject to the provisions of Section 7.1, shall be
entitled in all respects to assume that no such facts exist; provided that if on
a date not fewer than two Business Days prior to the date upon which by the
terms hereof any such monies may become payable for any purpose (including,
without limitation, the payment of the principal of, or premium, if any, or
interest on any Security) the Trustee shall not have received, with respect to
such monies, the notice provided for in this Section 12.5, then, anything herein
contained to the contrary notwithstanding, the Trustee shall have full power and
authority to receive such monies and to apply the same to the purpose for which
they were received, and shall not be affected by any notice to the contrary
which may be received by it on or after such prior date.

                  Notwithstanding anything in this Article XII to the contrary,
nothing shall prevent any payment by the Trustee to the Holders of monies
deposited with it pursuant to Section 8.1, and any such payment shall not be
subject to the provisions of Section 12.1 or 12.2.

                  The Trustee, subject to the provisions of Section 7.1, shall
be entitled to rely on the delivery to it of a written notice by a
Representative or a person representing himself to be a holder of Senior
Indebtedness (or a trustee on behalf of such holder) to establish that such
notice has been given by a Representative or a holder of Senior Indebtedness or
a trustee on behalf of any such holder or holders. In the event that the Trustee
determines in good faith that further evidence is required with respect to the
right of any person as a holder of Senior Indebtedness to participate in any
payment or distribution pursuant to this Article XII, the Trustee may request
such person to furnish evidence to the reasonable satisfaction of the Trustee as
to the amount of Senior Indebtedness held by such person, the extent to which
such person is entitled to participate in such payment or distribution and any
other facts pertinent to the rights of such person under this Article XII, and
if such evidence is not furnished the Trustee may defer any payment to such
person pending judicial determination as to the right of such person to receive
such payment.


                                       49


Section 12.6.     Trustee's Relation to Senior Indebtedness.

                  The Trustee in its individual capacity shall be entitled to
all the rights set forth in this Article XII in respect of any Senior
Indebtedness at any time held by it, to the same extent as any other holder of
Senior Indebtedness, and nothing in Section 7.11 or elsewhere in this Indenture
shall deprive the Trustee of any of its rights as such holder.

                  With respect to the holders of Senior Indebtedness, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article XII, and no implied
covenants or obligations with respect to the holders of Senior Indebtedness
shall be read into this Indenture against the Trustee. The Trustee shall not be
deemed to owe any fiduciary duty to the holders of Senior Indebtedness and,
subject to the provisions of Section 7.1, the Trustee shall not be liable to any
holder of Senior Indebtedness if it shall pay over or deliver to Holders of
Securities, the Company or any other person money or assets to which any holder
of Senior Indebtedness shall be entitled by virtue of this Article XII or
otherwise.

Section 12.7.     No Impairment of Subordination.

                  No right of any present or future holder of any Senior
Indebtedness to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
the Company or by any act or failure to act, in good faith, by any such holder,
or by any noncompliance by the Company with the terms, provisions and covenants
of this Indenture, regardless of any knowledge thereof which any such holder may
have or otherwise be charged with.

Section 12.8.     Article Applicable to Paying Agents.

                  If at any time any Paying Agent other than the Trustee shall
have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall (unless the context otherwise requires)
be construed as extending to and including such Paying Agent within its meaning
as fully for all intents and purposes as if such Paying Agent were named in this
Article in addition to or in place of the Trustee; provided, however, that the
first paragraph of Section 12.5 shall not apply to the Company or any Affiliate
of the Company if it or such Affiliate acts as Paying Agent.

Section 12.9.     Senior Indebtedness Entitled to Rely.

                  The holders of Senior Indebtedness (including, without
limitation, Designated Senior Indebtedness) shall have the right to rely upon
this Article XII, and no amendment or modification of the provisions contained
herein shall diminish the rights of such holders unless such holders shall have
agreed in writing thereto.


                                       50


                  IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed as of the day and year first above written.

                                  GERON CORPORATION


                                  By:
                                     -------------------------------------------
                                     Name:
                                     Its:

                                  [Name of Trustee]


                                  By:
                                     -------------------------------------------
                                     Name:
                                     Its: