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                                                                   Exhibit 10.24

                               IMMUNEX CORPORATION
                   STOCK OPTION PLAN FOR NONEMPLOYEE DIRECTORS
                    AMENDED AND RESTATED ON FEBRUARY 13, 1997

SECTION 1.  PURPOSES
The purposes of the Immunex Corporation Stock Option Plan for Nonemployee
Directors (this "Plan") are to attract and retain the services of experienced
and knowledgeable nonemployee directors of Immunex Corporation (the "Company")
and to provide an incentive for such directors by providing an opportunity for
stock ownership in the Company.

SECTION 2.  SHARES SUBJECT TO THE PLAN
Subject to adjustment in accordance with Section 6 hereof, the total number of
shares of the Company's common stock (the "Common Stock") for which options may
be granted under this Plan is 100,000 as such Common Stock was constituted on
December 13, 1993 (the "Shares").  The Shares shall be shares currently
authorized but unissued or subsequently acquired by the Company and shall
include shares representing the unexercised portion of any option granted under
this Plan which expires or terminates without being exercised in full.

SECTION 3.  ADMINISTRATION OF THE PLAN
The administrator of this Plan (the "Plan Administrator") shall be the Board of
Directors of the Company (the "Board").  Subject to the terms of this Plan, the
Plan Administrator shall have the power to construe the provisions of this Plan,
to determine all questions arising hereunder and to adopt and amend such rules
and regulations for the administration of this Plan as it may deem desirable.

SECTION 4.  PARTICIPATION IN THE PLAN

               4.1  ELIGIBLE DIRECTORS
Each member of the Board elected or appointed who is not otherwise an employee
of the Company, any parent or subsidiary corporation, or a director appointed by
American Cyanamid Company or American Home Products Corporation pursuant to the
Amended and Restated Governance Agreement dated as of December 15, 1992 (an
"Eligible Director") shall be eligible to participate in this Plan.

               4.2  INITIAL GRANTS
Each Eligible Director who is elected or appointed for the first time after the
date of adoption of this Plan shall automatically receive the grant of an option
to purchase 10,000 Shares on the day such Eligible Director is initially elected
or appointed.

               4.3  ANNUAL GRANTS
Each Eligible Director continuing service as an Eligible Director immediately
following an Annual Meeting of Shareholders shall automatically receive an
option to purchase 5,000 Shares immediately following each year's Annual Meeting
of Shareholders as an annual grant; provided, however, that an Eligible Director
who has received an initial grant of an option to purchase 10,000 Shares on such
date shall not receive an annual grant until the next Annual Meeting.

SECTION 5.  OPTION TERMS
Each option granted to an Eligible Director under this Plan and the issuance of
Shares hereunder shall be subject to the following terms:

               5.1  OPTION AGREEMENT
Each option granted under this Plan shall be evidenced by an option agreement
(an "Agreement") duly executed on behalf of the Company.  Each Agreement shall
comply with and be subject to the terms and conditions of this Plan.  Any
Agreement may contain such other terms, provisions and conditions not
inconsistent with this Plan as may be determined by the Plan Administrator.

               5.2  OPTION EXERCISE PRICE
The option exercise price for an option granted under this Plan shall be the
closing price, or if there is no closing price, the mean between the high and
the low sale price of the Shares covered by the option on the day the option is
granted on the Nasdaq Stock Market or, if no Common Stock was traded on such
date, on the IMMEDIATELY  preceding date on which Common Stock was so traded.


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               5.3  VESTING AND EXERCISABILITY
Each option granted to an Eligible Director shall vest and become exercisable in
accordance with the following schedule:

 Period of Eligible Directors' Continuous
  Service as a Director With the Company        Portion of Total Option Which Is
    From the Date the Option is Granted                    Exercisable

          Less than twelve months                              0%
               Twelve months                                   20%
            Twenty-four months                                 40%
             Thirty-six months                                 60%
            Forty-eight months                                 80%
          Sixty months or greater                             100%

               5.4  TIME AND MANNER OF EXERCISE OF OPTION
Each option may be exercised in whole or in part at any time and from time to
time; provided, however, that no fewer than 100 Shares (or the remaining Shares
then purchasable under the option, if less than 100 Shares) may be purchased
upon any exercise of any option hereunder and that only whole Shares will be
issued pursuant to the exercise of any option.  Any option may be exercised by
giving written notice, signed by the person exercising the option, to the
Company stating the number of Shares with respect to which the option is being
exercised, accompanied by payment in full for such Shares, which payment may be
in whole or in part (a) in cash or by check, (b) in shares of Common Stock
already owned for at least six months by the person exercising the option,
valued at fair market value at the time of such exercise, or (c) by delivery of
a properly executed exercise notice, together with irrevocable instructions to a
broker, to properly deliver to the Company the amount of sale or loan proceeds
to pay the exercise price, all in accordance with the regulations of the Federal
Reserve Board.

               5.5  TERM OF OPTIONS
Each option shall expire ten years from the date of the granting thereof, but
shall be subject to earlier termination as follows:

               (a)  In the event that an optionee ceases to be a director of the
     Company for any reason other than the death of the optionee the unvested
     portion of the options granted to such optionee shall terminate immediately
     and the vested portion of the options granted to such optionee may be
     exercised by him or her only within three months after the date such
     optionee ceases to be a director of the Company.

               (b)  In the event of the death of an optionee, whether during the
     optionee's service as a director or during the three month period referred
     to in Section 5.5(a), the unvested portion of the options granted to such
     optionee shall terminate immediately and the vested portion of the options
     granted to such optionee shall be exercisable, and such options shall
     expire unless exercised within twelve months after the date of the
     optionee's death, by the legal representatives or the estate of such
     optionee, by any person or persons whom the optionee shall have designated
     in writing on forms prescribed by and filed with the Company or, if no such
     designation has been made, by the person or persons to whom the optionee's
     rights have passed by will or the laws of descent and distribution.


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               5.6  TRANSFERABILITY
During an optionee's lifetime, an option may be exercised only by the optionee.
Options granted under this Plan and the rights and privileges conferred thereby
shall not be subject to execution, attachment or similar process and may not be
transferred, assigned, pledged or hypothecated in any manner (whether by
operation of law or otherwise) other than by will or by the applicable laws of
descent and distribution. In addition, the Plan Administrator may permit a
recipient of an option to designate in writing during the optionee's lifetime a
beneficiary to receive and exercise options in the event of the optionee's death
(as provided in Section 5.5(b)).  Any attempt to transfer, assign, pledge,
hypothecate or otherwise dispose of any option under this Plan or of any right
or privilege conferred thereby, contrary to the provisions of this Plan, or the
sale or levy or any attachment or similar process upon the rights and privileges
conferred hereby, shall be null and void.

               5.7  HOLDING PERIOD
If an individual subject to Section 16 of the Exchange Act of 1934, as amended
(the "Exchange Act") sells shares of Common Stock obtained upon the exercise of
any option granted under this Plan within six months after the date the option
was granted, such sale may result in short-swing profit recovery under Section
16(b) of the Exchange Act.

               5.8  PARTICIPANT'S OR SUCCESSOR'S RIGHTS AS SHAREHOLDER
Neither an optionee nor the optionee's successor(s) in interest shall have any
rights as a shareholder of the Company with respect to any Shares subject to an
option granted to the optionee until such person becomes a holder of record of
such Shares.

               5.9  LIMITATION AS TO DIRECTORSHIP
Neither this Plan, nor the granting of an option, nor any other action taken
pursuant to this Plan shall constitute or be evidence of any agreement or
understanding, express or implied, that an optionee has a right to continue as a
director for any period of time or at any particular rate of compensation.

               5.10 REGULATORY APPROVAL AND COMPLIANCE
The Company shall not be required to issue any certificate or certificates for
Shares upon the exercise of an option granted under this Plan, or record as a
holder of record of Shares the name of the individual exercising an option under
this Plan, without obtaining to the complete satisfaction of the Plan
Administrator the approval of all regulatory bodies deemed necessary by the Plan
Administrator, and without complying, to the Plan Administrator's complete
satisfaction, with all rules and regulations under federal, state or local law
deemed applicable by the Plan Administrator.

SECTION 6.  CAPITAL ADJUSTMENTS
The aggregate number and class of Shares for which options may be granted under
this Plan, the number and class of Shares covered by each outstanding option and
the exercise price per Share thereof (but not the total price) shall all be
proportionately adjusted for any stock dividends, stock splits,
recapitalizations, combinations or exchanges of shares, split-ups, split-offs,
spinoffs, or other similar changes in capitalization.  Upon the effective date
of a dissolution or liquidation of the Company, or of a reorganization, merger
or consolidation of the Company with one or more corporations that results in
more than 70% of the outstanding voting shares of the Company being owned by one
or more affiliated corporations or other affiliated entities, or of a transfer
of all or substantially all the assets or more than 70% of the then outstanding
shares of the Company to another corporation or other entity, this Plan and all
options granted hereunder shall terminate.  In the event of such dissolution,
liquidation, reorganization, merger, consolidation, transfer of assets or
transfer of stock, each optionee shall be entitled, for a period of twenty days
prior to the effective date of such transaction, to purchase the full number of
shares under his or her option which he or she otherwise would have been
entitled to purchase during the remaining term of such option.

Adjustments under this Section 6 shall be made by the Plan Administrator, whose
determination shall be final.  In the event of any adjustment in the number of
Shares covered by any option, any fractional Shares resulting from such
adjustment shall be disregarded and each such option shall cover only the number
of full Shares resulting from such adjustment.

SECTION 7.  EXPENSES OF THE PLAN
All costs and expenses of the adoption and administration of this Plan shall be
borne by the Company; none of such expenses shall be charged to any optionee.

SECTION 8.  COMPLIANCE WITH RULE 16b-3
It is the intention of the Company that this Plan comply in all respects with
the requirements for a "formula plan" within the meaning attributed to that term
for purposes of Rule 16b-3 promulgated under Section 16(b) of the Exchange Act.
Therefore, if any Plan provision is later found not to be in compliance with
such requirements, that provision shall be deemed null and void, and in all
events this Plan shall be construed in favor of its meeting such requirements.


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SECTION 9.  TERMINATION AND AMENDMENT OF THE PLAN

The Board may amend, terminate or suspend this Plan at any time, in its sole and
absolute discretion; provided, however, that if required to qualify this Plan as
a formula plan for purposes of Rule 16b-3 under Section 16(b) of the Exchange
Act, no amendment may be made more than once every six months that would change
the amount, price, timing or vesting of the options, other than to comply with
changes in the Internal Revenue Code of 1986, as amended, or the rules and
regulations  thereunder; provided further that no amendment that would (a)
increase the number of Shares that may be issued under this Plan, or (b)
otherwise require shareholder approval under any applicable law or regulation
shall be made without the approval of the Company's shareholders.

SECTION 10.  DURATION
This Plan shall continue in effect until December 13, 2003 unless it is sooner
terminated by action of the Board or the Company's shareholders, but such
termination shall not affect the terms of any then-outstanding options.
Adopted by the Company's Board of Directors on December 13, 1993 and approved by
the Company's shareholders on April 27, 1994.  Amended and restated by the Board
on February 13, 1997.


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