EXHIBIT 10.1

                            JENNER TECHNOLOGIES, INC.

                            INDEMNIFICATION AGREEMENT


         This  Indemnification   Agreement  ("Agreement")  is  effective  as  of
_____________,   1997  by  and  between  Jenner  Technologies,   Inc.,  Delaware
corporation (the "Company"), and ________________, ("Indemnitee").

         WHEREAS,  the  Company  desires to attract  and retain the  services of
highly qualified individuals,  such as Indemnitee,  to serve the Company and its
related entities;

         WHEREAS,  in order to induce Indemnitee to continue to provide services
to the Company,  the Company wishes to provide for the  indemnification  of, and
the  advancement of expenses to,  Indemnitee to the maximum extent  permitted by
law;

         WHEREAS,  the Company and Indemnitee recognize the continued difficulty
in  obtaining  liability  insurance  for  the  Company's  directors,   officers,
employees, agents and fiduciaries, the significant increases in the cost of such
insurance and the general reductions in the coverage of such insurance;

         WHEREAS,  the Company and Indemnitee  further recognize the substantial
increase in corporate  litigation in general,  subjecting  directors,  officers,
employees, agents and fiduciaries to expensive litigation risks at the same time
as the  availability  and  coverage of  liability  insurance  has been  severely
limited; and

         WHEREAS,  in view of the  considerations  set forth above,  the Company
desires  that  Indemnitee  shall be  indemnified  and  advanced  expenses by the
Company as set forth herein;

         NOW,  THEREFORE,  the Company and Indemnitee  hereby agree as set forth
below.

         1.       Certain Definitions.

                  (a)  "Change in Control"  shall  mean,  and shall be deemed to
have occurred if, on or after the date of this  Agreement,  (i) any "person" (as
such term is used in Sections 13(d) and 14(d) of the Securities  Exchange Act of
1934,  as  amended) or group  acting in  concert,  other than a trustee or other
fiduciary  holding  securities  under an  employee  benefit  plan of the Company
acting in such  capacity or a  corporation  owned  directly or indirectly by the
stockholders  of the  Company in  substantially  the same  proportions  as their
ownership of stock of the Company, becomes the "beneficial owner" (as defined in
Rule 13d-3 under said Act), directly or indirectly, of securities of the Company
representing  more  than  50% of  the  total  voting  power  represented  by the
Company's then outstanding Voting Securities (as defined below), (ii) during any
period of two consecutive years, individuals who at the beginning of such period
constitute  the Board of  Directors  of the Company and any new  director  whose
election by the Board of Directors or  nomination  for election by the Company's
stockholders  was  approved  by a vote  of at  least  two  thirds  (2/3)  of the
directors then still in office who either were directors at the beginning of the
period or whose  election or nomination for election was previously so approved,
cease for any reason to constitute a majority thereof, (iii) the stockholders of
the Company approve a merger or consolidation


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of the Company with any other  corporation  other than a merger or consolidation
which  would  result  in  the  Voting  Securities  of  the  Company  outstanding
immediately   prior  thereto   continuing  to  represent  (either  by  remaining
outstanding  or by being  converted  into  Voting  Securities  of the  surviving
entity)  at least  80% of the  total  voting  power  represented  by the  Voting
Securities of the Company or such surviving entity outstanding immediately after
such merger or consolidation,  or (iv) the stockholders of the Company approve a
plan of  complete  liquidation  of the Company or an  agreement  for the sale or
disposition  by the  Company  of (in one  transaction  or a  series  of  related
transactions) all or substantially all of the Company's assets.

                  (b)  "Claim"  shall mean with  respect to a Covered  Event (as
defined below): any threatened, pending or completed action, suit, proceeding or
alternative   dispute  resolution   mechanism,   or  any  hearing,   inquiry  or
investigation  that  Indemnitee  in  good  faith  believes  might  lead  to  the
institution  of  any  such  action,  suit,  proceeding  or  alternative  dispute
resolution mechanism, whether civil, criminal, administrative,  investigative or
other.

                  (c) References to the "Company" shall include,  in addition to
Jenner   Technologies,   Inc.,  any  constituent   corporation   (including  any
constituent of a  constituent)  absorbed in a  consolidation  or merger to which
Jenner  Technologies,  Inc. (or any of its wholly owned subsidiaries) is a party
which,  if its  separate  existence  had  continued,  would  have had  power and
authority  to  indemnify  its   directors,   officers,   employees,   agents  or
fiduciaries,  so that if  Indemnitee  is or was a director,  officer,  employee,
agent or fiduciary of such constituent corporation,  or is or was serving at the
request of such constituent corporation as a director,  officer, employee, agent
or  fiduciary  of another  corporation,  partnership,  joint  venture,  employee
benefit  plan,  trust or other  enterprise,  Indemnitee  shall stand in the same
position under the provisions of this Agreement with respect to the resulting or
surviving  corporation as Indemnitee would have with respect to such constituent
corporation if its separate existence had continued.

                  (d) "Covered Event" shall mean any event or occurrence related
to the fact that Indemnitee is or was a director,  officer,  employee,  agent or
fiduciary of the Company, or any subsidiary of the Company, or is or was serving
at the  request  of the  Company  as a  director,  officer,  employee,  agent or
fiduciary of another  corporation,  partnership,  joint venture,  trust or other
enterprise,  or by reason of any action or  inaction  on the part of  Indemnitee
while serving in such capacity.

                  (e)  "Expenses"  shall  mean any and all  expenses  (including
attorneys'  fees and all other  costs,  expenses  and  obligations  incurred  in
connection with investigating, defending, being a witness in or participating in
(including  on  appeal),  or  preparing  to  defend,  to be a  witness  in or to
participate in, any action,  suit,  proceeding,  alternative  dispute resolution
mechanism,  hearing, inquiry or investigation),  judgments, fines, penalties and
amounts paid in  settlement  (if such  settlement  is approved in advance by the
Company,  which  approval  shall not be  unreasonably  withheld),  actually  and
reasonably incurred, of any Claim and any federal, state, local or foreign taxes
imposed on the  Indemnitee  as a result of the  actual or deemed  receipt of any
payments under this Agreement.

                  (f)  "Expense  Advance"  shall  mean a payment  to  Indemnitee
pursuant  to Section 3 of  Expenses  in advance  of the  settlement  of or final
judgement in any action,  suit,  proceeding or  alternative  dispute  resolution
mechanism, hearing, inquiry or investigation which constitutes a Claim.


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                  (g) "Independent Legal Counsel" shall mean an attorney or firm
of attorneys, selected in accordance with the provisions of Section 2(d) hereof,
who shall not have  otherwise  performed  services for the Company or Indemnitee
within the last three years (other than with respect to matters  concerning  the
rights of Indemnitee under this Agreement, or of other indemnitees under similar
indemnity agreements).

                  (h) References to "other  enterprises"  shall include employee
benefit plans;  references to "fines" shall include any excise taxes assessed on
Indemnitee with respect to an employee  benefit plan; and references to "serving
at the request of the Company" shall include any service as a director, officer,
employee, agent or fiduciary of the Company which imposes duties on, or involves
services by, such director,  officer,  employee, agent or fiduciary with respect
to an employee  benefit plan,  its  participants  or its  beneficiaries;  and if
Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to
be in the interest of the participants and  beneficiaries of an employee benefit
plan,  Indemnitee  shall be deemed to have acted in a manner "not opposed to the
best interests of the Company" as referred to in this Agreement.

                  (i) "Reviewing Party" shall mean, subject to the provisions of
Section  2(d),  any  person  or body  appointed  by the  Board of  Directors  in
accordance with applicable law to review the Company's obligations hereunder and
under  applicable  law,  which may include a member or members of the  Company's
Board of Directors,  Independent Legal Counsel or any other person or body not a
party to the particular Claim for which Indemnitee is seeking indemnification.

                  (j)  "Section"  refers to a section of this  Agreement  unless
otherwise indicated.

                  (k)  "Voting  Securities"  shall  mean any  securities  of the
Company that vote generally in the election of directors.

         2.       Indemnification.

                  (a) Indemnification of Expenses.  Subject to the provisions of
Section 2(b) below,  the Company shall indemnify  Indemnitee for Expenses to the
fullest extent permitted by law if Indemnitee was or is or becomes a party to or
witness  or other  participant  in,  or is  threatened  to be made a party to or
witness or other  participant  in, any Claim (whether by reason of or arising in
part out of a Covered  Event),  including  all interest,  assessments  and other
charges paid or payable in connection with or in respect of such Expenses.

                  (b) Review of Indemnification Obligations. Notwithstanding the
foregoing,  in the event any Reviewing Party shall have determined (in a written
opinion,  in any case in which Independent Legal Counsel is the Reviewing Party)
that  Indemnitee is not entitled to be indemnified  hereunder  under  applicable
law, (i) the Company shall have no further obligation under Section 2(a) to make
any  payments  to  Indemnitee  not  made  prior  to such  determination  by such
Reviewing  Party,  and (ii) the Company  shall be entitled to be  reimbursed  by
Indemnitee  (who  hereby  agrees to  reimburse  the  Company)  for all  Expenses
theretofore  paid to  Indemnitee to which  Indemnitee is not entitled  hereunder
under  applicable law;  provided,  however,  that if Indemnitee has commenced or
thereafter  commences legal proceedings in a court of competent  jurisdiction to
secure a determination that Indemnitee is entitled to be indemnified


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hereunder under  applicable law, any  determination  made by any Reviewing Party
that Indemnitee is not entitled to be indemnified hereunder under applicable law
shall not be binding  and  Indemnitee  shall not be required  to  reimburse  the
Company for any Expenses  theretofore  paid in indemnifying  Indemnitee  until a
final  judicial  determination  is made with  respect  thereto  (as to which all
rights  of  appeal  therefrom  have  been  exhausted  or  lapsed).  Indemnitee's
obligation to reimburse  the Company for any Expenses  shall be unsecured and no
interest shall be charged thereon.

                  (c) Indemnitee  Rights on Unfavorable  Determination;  Binding
Effect.  If any Reviewing Party determines that Indemnitee  substantively is not
entitled to be indemnified  hereunder in whole or in part under  applicable law,
Indemnitee  shall  have the right to  commence  litigation  seeking  an  initial
determination  by the  court  or  challenging  any  such  determination  by such
Reviewing  Party or any aspect  thereof,  including  the legal or factual  bases
therefor,  and,  subject to the  provisions  of Section 15, the  Company  hereby
consents to service of process and to appear in any such proceeding. Absent such
litigation,  any  determination  by any Reviewing  Party shall be conclusive and
binding on the Company and Indemnitee.

                  (d) Selection of Reviewing Party;  Change in Control. If there
has not been a Change in Control,  any Reviewing  Party shall be selected by the
Board of Directors, and if there has been such a Change in Control (other than a
Change in Control which has been  approved by a majority of the Company's  Board
of Directors who were  directors  immediately  prior to such Change in Control),
any Reviewing Party with respect to all matters  thereafter  arising  concerning
the rights of Indemnitee to  indemnification of Expenses under this Agreement or
any other  agreement or under the  Company's  Certificate  of  Incorporation  or
Bylaws as now or  hereafter  in effect,  or under any other  applicable  law, if
desired by Indemnitee, shall be Independent Legal Counsel selected by Indemnitee
and approved by the Company (which approval shall not be unreasonably withheld).
Such  counsel,  among other  things,  shall  render its  written  opinion to the
Company and  Indemnitee  as to whether and to what  extent  Indemnitee  would be
entitled to be indemnified hereunder under applicable law and the Company agrees
to abide by such opinion.  The Company agrees to pay the reasonable  fees of the
Independent  Legal Counsel referred to above and to indemnify fully such counsel
against any and all expenses (including  attorneys' fees),  claims,  liabilities
and  damages  arising out of or relating  to this  Agreement  or its  engagement
pursuant  hereto.  Notwithstanding  any other provision of this  Agreement,  the
Company shall not be required to pay Expenses of more than one Independent Legal
Counsel in connection with all matters concerning a single Indemnitee,  and such
Independent  Legal Counsel shall be the Independent Legal Counsel for any or all
other  Indemnitees  unless  (i) the  Company  otherwise  determines  or (ii) any
Indemnity shall provide a written statement setting forth in detail a reasonable
objection to such Independent Legal Counsel representing other Indemnitees.

                  (e) Mandatory Payment of Expenses.  Notwithstanding  any other
provision of this  Agreement  other than  Section 10 hereof,  to the extent that
Indemnitee has been  successful on the merits or otherwise,  including,  without
limitation,  the  dismissal of an action  without  prejudice,  in defense of any
Claim,  Indemnitee  shall  be  indemnified  against  all  Expenses  incurred  by
Indemnitee in connection therewith.


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         3.       Expense Advances.

                  (a)  Obligation  to Make Expense  Advances.  The Company shall
make Expense Advances to Indemnitee upon receipt of a written  undertaking by or
on behalf of the  Indemnitee  to repay such  amounts if it shall  ultimately  be
determined  that the Indemnitee is not entitled to be  indemnified  therefore by
the Company.

                  (b)  Form  of  Undertaking.  Any  written  undertaking  by the
Indemnitee  to repay any Expense  Advances  hereunder  shall be unsecured and no
interest shall be charged thereon.

                  (c) Determination of Reasonable Expense Advances.  The parties
agree that for the purposes of any Expense Advance for which Indemnitee has made
written demand to the Company in accordance  with this  Agreement,  all Expenses
included in such Expense Advance that are certified by affidavit of Indemnitee's
counsel as being reasonable shall be presumed conclusively to be reasonable.

         4.       Procedures for Indemnification and Expense Advances.

                  (a) Timing of Payments.  All  payments of Expenses  (including
without limitation  Expense Advances) by the Company to the Indemnitee  pursuant
to this Agreement  shall be made to the fullest extent  permitted by law as soon
as practicable  after written demand by Indemnitee  therefor is presented to the
Company,  but in no event later than  forty-five  (45)  business days after such
written demand by Indemnitee is presented to the Company,  except in the case of
Expense  Advances,  which shall be made no later than twenty (20)  business days
after such written demand by Indemnitee is presented to the Company.

                  (b)  Notice/Cooperation by Indemnitee.  Indemnitee shall, as a
condition  precedent to  Indemnitee's  right to be indemnified  or  Indemnitee's
right to receive Expense Advances under this Agreement,  give the Company notice
in writing as soon as practicable of any Claim made against Indemnitee for which
indemnification  will or could be sought  under  this  Agreement.  Notice to the
Company shall be directed to the Chief  Executive  Officer of the Company at the
address shown on the signature  page of this Agreement (or such other address as
the Company shall designate in writing to Indemnitee).  In addition,  Indemnitee
shall give the Company such  information  and  cooperation  as it may reasonably
require and as shall be within Indemnitee's power.

                  (c) No  Presumptions;  Burden of Proof.  For  purposes of this
Agreement, the termination of any Claim by judgment,  order, settlement (whether
with  or  without  court  approval)  or  conviction,  or  upon  a plea  of  nolo
contendere,  or its equivalent,  shall not create a presumption  that Indemnitee
did not meet any particular standard of conduct or have any particular belief or
that a court  has  determined  that  indemnification  is not  permitted  by this
Agreement or applicable  law. In addition,  neither the failure of any Reviewing
Party  to  have  made a  determination  as to  whether  Indemnitee  has  met any
particular  standard  of conduct  or had any  particular  belief,  nor an actual
determination  by any Reviewing  Party that Indemnitee has not met such standard
of  conduct  or did not have such  belief,  prior to the  commencement  of legal
proceedings  by Indemnitee to secure a judicial  determination  that  Indemnitee
should be indemnified under this Agreement or applicable law, shall be a defense
to  Indemnitee's  claim or create a presumption  that Indemnitee has not met any
particular standard of conduct or did not have any


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particular  belief.  In connection with any determination by any Reviewing Party
or  otherwise  as to  whether  the  Indemnitee  is  entitled  to be  indemnified
hereunder,  the  burden  of proof  shall be on the  Company  to  establish  that
Indemnitee is not so entitled.

                  (d) Notice to Insurers.  If, at the time of the receipt by the
Company of a notice of a Claim pursuant to Section 4(b) hereof,  the Company has
liability insurance in effect which may cover such Claim, the Company shall give
prompt  notice of the  commencement  of such Claim to the insurers in accordance
with the  procedures  set forth in the  respective  policies.  The Company shall
thereafter take all necessary or desirable action to cause such insurers to pay,
on behalf of the  Indemnitee,  all amounts  payable as a result of such Claim in
accordance with the terms of such policies.

                  (e)  Selection of Counsel.  In the event the Company  shall be
obligated hereunder to provide  indemnification for or make any Expense Advances
with respect to the Expenses of any Claim, the Company, if appropriate, shall be
entitled to assume the defense of such Claim with counsel approved by Indemnitee
(which  approval  shall  not be  unreasonably  withheld)  upon the  delivery  to
Indemnitee of written notice of the Company's  election to do so. After delivery
of such notice, approval of such counsel by Indemnitee and the retention of such
counsel by the Company,  the Company will not be liable to Indemnitee under this
Agreement for any fees or expenses of separate counsel subsequently  employed by
or on behalf of Indemnitee  with respect to the same Claim;  provided,  however,
that,  (i)  Indemnitee  shall  have the  right to employ  Indemnitee's  separate
counsel in any such Claim at Indemnitee's expense and (ii) if (A) the employment
of separate counsel by Indemnitee has been previously authorized by the Company,
(B) Indemnitee  shall have reasonably  concluded that there may be a conflict of
interest  between the Company and Indemnitee in the conduct of any such defense,
or (C) the Company  shall not  continue  to retain  such  counsel to defend such
Claim,  then the fees and expenses of  Indemnitee's  separate  counsel  shall be
Expenses for which  Indemnitee may receive  indemnification  or Expense Advances
hereunder.

         5.       Additional Indemnification Rights; Nonexclusivity.

                  (a)  Scope.   The  Company  hereby  agrees  to  indemnify  the
Indemnitee to the fullest  extent  permitted by law,  notwithstanding  that such
indemnification  is not specifically  authorized by the other provisions of this
Agreement,  the Company's Certificate of Incorporation,  the Company's Bylaws or
by statute.  In the event of any change after the date of this  Agreement in any
applicable  law,  statute  or  rule  which  expands  the  right  of  a  Delaware
corporation  to  indemnify  a member of its board of  directors  or an  officer,
employee,  agent or  fiduciary,  it is the  intent of the  parties  hereto  that
Indemnitee shall enjoy by this Agreement the greater  benefits  afforded by such
change.  In the event of any change in any applicable law, statute or rule which
narrows the right of a Delaware  corporation  to indemnify a member of its board
of directors or an officer,  employee,  agent or fiduciary,  such change, to the
extent not otherwise required by such law, statute or rule to be applied to this
Agreement,  shall have no effect on this  Agreement or the  parties'  rights and
obligations hereunder except as set forth in Section 10(a) hereof.

                  (b)  Nonexclusivity.  The  indemnification  and the payment of
Expense  Advances  provided by this Agreement shall be in addition to any rights
to  which  Indemnitee  may  be  entitled  under  the  Company's  Certificate  of
Incorporation,  its Bylaws,  any other  agreement,  any vote of  stockholders or
disinterested  directors,  the General Corporation Law of the State of Delaware,
or otherwise.  The  indemnification and the payment of Expense Advances provided
under this Agreement shall continue as

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to Indemnitee  for any action taken or not taken while serving in an indemnified
capacity even though subsequent  thereto  Indemnitee may have ceased to serve in
such capacity.

         6. No  Duplication  of Payments.  The Company shall not be liable under
this  Agreement  to make any payment in  connection  with any Claim made against
Indemnitee to the extent  Indemnitee  has otherwise  actually  received  payment
(under  any  insurance  policy,   provision  of  the  Company's  Certificate  of
Incorporation, Bylaws or otherwise) of the amounts otherwise payable hereunder.

         7.  Partial  Indemnification.  If  Indemnitee  is  entitled  under  any
provision  of this  Agreement  to  indemnification  by the Company for some or a
portion of Expenses incurred in connection with any Claim, but not, however, for
all of the total  amount  thereof,  the  Company  shall  nevertheless  indemnify
Indemnitee for the portion of such Expenses to which Indemnitee is entitled.

         8. Mutual  Acknowledgment.  Both the Company and Indemnitee acknowledge
that in certain instances,  federal law or applicable public policy may prohibit
the Company from  indemnifying  its directors,  officers,  employees,  agents or
fiduciaries  under this  Agreement  or  otherwise.  Indemnitee  understands  and
acknowledges that the Company has undertaken or may be required in the future to
undertake with the Securities and Exchange  Commission to submit the question of
indemnification  to a court in certain  circumstances for a determination of the
Company's right under public policy to indemnify Indemnitee.

         9. Liability  Insurance.  To the extent the Company maintains liability
insurance applicable to directors,  officers,  employees, agents or fiduciaries,
Indemnitee  shall be  covered  by such  policies  in such a manner as to provide
Indemnitee  the same rights and benefits as are  provided to the most  favorably
insured of the  Company's  directors,  if  Indemnitee  is a director;  or of the
Company's  officers,  if  Indemnitee  is not a director of the Company but is an
officer; or of the Company's key employees, agents or fiduciaries, if Indemnitee
is not an officer or director but is a key employee, agent or fiduciary.

         10. Exceptions.  Notwithstanding any other provision of this Agreement,
the Company shall not be obligated pursuant to the terms of this Agreement:

                  (a) Excluded Action or Omissions.  To indemnify Indemnitee for
Expenses resulting from acts,  omissions or transactions for which Indemnitee is
prohibited  from  receiving  indemnification  under this Agreement or applicable
law; provided,  however,  that  notwithstanding any limitation set forth in this
Section 10(a)  regarding the  Company's  obligation to provide  indemnification,
Indemnitee  shall be  entitled  under  Section  3 to  receive  Expense  Advances
hereunder  with  respect  to any such  Claim  unless  and  until a court  having
jurisdiction  over the Claim shall have made a final judicial  determination (as
to which all rights of appeal  therefrom  have been  exhausted  or lapsed)  that
Indemnitee has engaged in acts,  omissions or transactions  for which Indemnitee
is prohibited from receiving  indemnification under this Agreement or applicable
law.

                  (b) Claims  Initiated  by  Indemnitee.  To  indemnify  or make
Expense  Advances to  Indemnitee  with  respect to Claims  initiated  or brought
voluntarily  by  Indemnitee  and  not  by  way  of  defense,   counterclaim   or
cross-claim,  except  (i) with  respect to  actions  or  proceedings  brought to
establish  or enforce a right to  indemnification  under this  Agreement  or any
other agreement or insurance policy or


                                       -7-






under the Company's  Certificate of  Incorporation or Bylaws now or hereafter in
effect  relating to Claims for  Covered  Events,  (ii) in specific  cases if the
Board of Directors  has approved the  initiation  or bringing of such Claim,  or
(iii)  as  otherwise   required  under  Section  145  of  the  Delaware  General
Corporation Law (relating to indemnification of officers,  directors,  employees
and agents,  and  insurance),  regardless  of whether  Indemnitee  ultimately is
determined  to  be  entitled  to  such  indemnification,  Expense  Advances,  or
insurance recovery, as the case may be.

                  (c)  Lack of  Good  Faith.  To  indemnify  Indemnitee  for any
Expenses incurred by the Indemnitee with respect to any action instituted (i) by
Indemnitee  to  enforce  or  interpret  this   Agreement,   if  a  court  having
jurisdiction  over such action determines as provided in Section 13 that each of
the material  assertions  made by the  Indemnitee as a basis for such action was
not  made in  good  faith  or was  frivolous,  or (ii) by or in the  name of the
Company to enforce or interpret this Agreement,  if a court having  jurisdiction
over such action  determines as provided in Section 13 that each of the material
defenses  asserted  by  Indemnitee  in such  action was made in bad faith or was
frivolous.

                  (d) Claims Under Section  16(b).  To indemnify  Indemnitee for
expenses  and the  payment  of profits  arising  from the  purchase  and sale by
Indemnitee  of  securities  in  violation  of  Section  16(b) of the  Securities
Exchange Act of 1934, as amended,  or any similar successor  statute;  provided,
however,  that  notwitstanding  any  limitation  set forth in this Section 10(d)
regarding the Company's obligations to provide indemnification, Indemnitee shall
be entitled under Section 3 to receive Expense  Advances  hereunder with respect
to any such Claim  unless and until a court having  jurisdiction  over the Claim
shall have made a final  determination  (as to which all  rights of appeal  have
been exhausted or lapsed) that Indemnitee has violated said statute.

         11.  Counterparts.  This  Agreement  may be  executed  in  one or  more
counterparts, each of which shall constitute an original.

         12. Binding  Effect;  Successors and Assigns.  This Agreement  shall be
binding  upon and inure to the  benefit  of and be  enforceable  by the  parties
hereto  and  their  respective  successors,  assigns  (including  any  direct or
indirect  successor by purchase,  merger,  consolidation  or otherwise to all or
substantially all of the business or assets of the Company),  spouses, heirs and
personal  and legal  representatives.  The Company  shall  require and cause any
successor  (whether  direct  or  indirect,  and  whether  by  purchase,  merger,
consolidation or otherwise) to all, substantially all, or a substantial part, of
the  business  or  assets  of the  Company,  by  written  agreement  in form and
substance  satisfactory to Indemnitee,  expressly to assume and agree to perform
this  Agreement in the same manner and to the same extent that the Company would
be required to perform if no such  succession  had taken place.  This  Agreement
shall continue in effect regardless of whether Indemnitee  continues to serve as
a director, officer, employee, agent or fiduciary (as applicable) of the Company
or of any other enterprise at the Company's request.

         13.   Expenses   Incurred  in  Action   Relating  to   Enforcement   or
Interpretation.  In the event that any action is instituted by Indemnitee  under
this  Agreement or under any  liability  insurance  policies  maintained  by the
Company to enforce or interpret  any of the terms hereof or thereof,  Indemnitee
shall be entitled to be indemnified for all Expenses incurred by Indemnitee with
respect  to  such  action  (including  without   limitation   attorneys'  fees),
regardless of whether Indemnitee is ultimately successful


                                       -8-





in such action, unless as a part of such action a court having jurisdiction over
such  action  makes a final  judicial  determination  (as to which all rights of
appeal  therefrom  have been  exhausted  or  lapsed)  that each of the  material
assertions  made by  Indemnitee  as a basis for such action was not made in good
faith or was  frivolous;  provided,  however,  that until  such  final  judicial
determination  is made,  Indemnitee shall be entitled under Section 3 to receive
payment of Expense Advances  hereunder with respect to such action. In the event
of an action instituted by or in the name of the Company under this Agreement to
enforce or interpret  any of the terms of this  Agreement,  Indemnitee  shall be
entitled to be indemnified for all Expenses incurred by Indemnitee in defense of
such action  (including  without  limitation  costs and expenses  incurred  with
respect to Indemnitee's  counterclaims  and  cross-claims  made in such action),
unless as a part of such  action a court  having  jurisdiction  over such action
makes a final judicial determination (as to which all rights of appeal therefrom
have been  exhausted or lapsed) that each of the material  defenses  asserted by
Indemnitee  in such  action  was made in bad faith or was  frivolous;  provided,
however, that until such final judicial  determination is made, Indemnitee shall
be entitled  under Section 3 to receive  payment of Expense  Advances  hereunder
with respect to such action.

         14.  Period of  Limitations.  No legal  action  shall be brought and no
cause of action  shall be  asserted  by or in the right of the  Company  against
Indemnitee,  Indemnitee's estate,  spouse, heirs, executors or personal or legal
representatives  after the  expiration  of two years from the date of accrual of
such cause of action,  and any claim or cause of action of the Company  shall be
extinguished and deemed released unless asserted by the timely filing of a legal
action  within  such two year  period;  provided,  however,  that if any shorter
period of limitations is otherwise  applicable to any such cause of action, such
shorter period shall govern.

         15. Notice.  All notices,  requests,  demands and other  communications
under this  Agreement  shall be in writing and shall be deemed duly given (i) if
delivered  by hand and  signed for by the party  addressed,  on the date of such
delivery,  or (ii) if mailed  by  domestic  certified  or  registered  mail with
postage prepaid, on the third business day after the date postmarked.  Addresses
for notice to either party are as shown on the signature page of this Agreement,
or as subsequently modified by written notice.

         16. Consent to  Jurisdiction.  The Company and  Indemnitee  each hereby
irrevocably  consent to the  jurisdiction of the courts of the State of Delaware
for all purposes in connection with any action or proceeding which arises out of
or relates to this  Agreement  and agree that any action  instituted  under this
Agreement  shall be commenced,  prosecuted  and  continued  only in the Court of
Chancery of the State of Delaware in and for New Castle  County,  which shall be
the exclusive and only proper forum for adjudicating such a claim.

         17.  Severability.  The provisions of this Agreement shall be severable
in the event that any of the provisions hereof (including any provision within a
single  section,  paragraph  or  sentence)  are  held  by a court  of  competent
jurisdiction to be invalid, void or otherwise  unenforceable,  and the remaining
provisions  shall remain  enforceable  to the fullest  extent  permitted by law.
Furthermore,  to the fullest extent  possible,  the provisions of this Agreement
(including  without  limitation  each portion of this  Agreement  containing any
provision  held to be  invalid,  void or  otherwise  unenforceable,  that is not
itself invalid,  void or unenforceable)  shall be construed so as to give effect
to  the  intent   manifested   by  the  provision   held  invalid,   illegal  or
unenforceable.


                                       -9-





         18.  Choice  of  Law.  This  Agreement,   and  all  rights,   remedies,
liabilities,  powers  and  duties of the  parties  to this  Agreement,  shall be
governed by and construed in  accordance  with the laws of the State of Delaware
as  applied to  contracts  between  Delaware  residents  entered  into and to be
performed  entirely in the State of Delaware  without  regard to  principles  of
conflicts of laws.

         19.  Subrogation.  In the event of payment  under this  Agreement,  the
Company  shall be  subrogated to the extent of such payment to all of the rights
of recovery of Indemnitee, who shall execute all documents required and shall do
all acts that may be  necessary  to secure such rights and to enable the Company
effectively to bring suit to enforce such rights.

         20. Amendment and Termination. No amendment, modification,  termination
or  cancellation  of this Agreement  shall be effective  unless it is in writing
signed by both the parties  hereto.  No waiver of any of the  provisions of this
Agreement  shall be  deemed  to be or shall  constitute  a waiver  of any  other
provisions  hereof (whether or not similar),  nor shall such waiver constitute a
continuing waiver.

         21.  Integration  and Entire  Agreement.  This Agreement sets forth the
entire  understanding  between the parties  hereto and supersedes and merges all
previous  written  and  oral  negotiations,   commitments,   understandings  and
agreements relating to the subject matter hereof between the parties hereto.

         22. No Construction as Employment Agreement.  Nothing contained in this
Agreement  shall be construed as giving  Indemnitee  any right to be retained in
the employ of the Company or any of its subsidiaries or affiliated entities.

         IN  WITNESS   WHEREOF,   the   parties   hereto  have   executed   this
Indemnification Agreement as of the date first above written.


JENNER TECHNOLOGIES, INC.                              AGREED TO AND ACCEPTED


By:                                                    -------------------------
   -------------------------                           Signature

Title:                                                 ------------------------
      ----------------------                           Print Name


Address:    2010 Crow Canyon Place                     Address:
            San Ramon, California  94583                       -----------------
                                                               -----------------




                                      -10-