EXHIBIT 10.27

THIS WARRANT AND THE SECURITIES  RECEIVABLE  UPON EXERCISE  HEREOF HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES  ACT"),
OR ANY  STATE  SECURITIES  LAW,  AND  MAY  NOT BE  SOLD,  TRANSFERRED,  PLEDGED,
HYPOTHECATED OR OTHERWISE DISPOSED OF UNLESS (i) A REGISTRATION  STATEMENT UNDER
THE  SECURITIES  ACT AND  APPLICABLE  STATE  SECURITIES  LAWS SHALL HAVE  BECOME
EFFECTIVE WITH REGARD THERETO,  OR (ii) AN EXEMPTION FROM REGISTRATION UNDER THE
SECURITIES ACT AND APPLICABLE  STATE  SECURITIES LAWS IS AVAILABLE IN CONNECTION
WITH SUCH OFFER, SALE OR TRANSFER.

Warrant to Purchase
_____ shares

                                     Form of
                        Warrant to Purchase Common Stock
                                       of
                               CELGENE CORPORATION

     THIS  CERTIFIES  that  ___________________  or  any  subsequent  ("Holder")
hereof,  has  the  right  to  purchase  from  CELGENE  CORPORATION,  a  Delaware
corporation (the "Company"),  not more than ______ fully paid and  nonassessable
shares of the Company's Common Stock, par value $.01 per share ("Common Stock"),
at a price of $20.52 per share  subject to  adjustment  as provided in Section 5
(the "Exercise  Price"),  at any time on or before 5:00 p.m.,  Atlanta,  Georgia
time, on March 10, 2001.

     The Holder of this  Warrant  agrees with the Company  that this  Warrant is
issued and all rights  hereunder shall be held subject to all of the conditions,
limitations and provisions set forth herein.

     1. Date of Issuance.

     This Warrant shall be deemed to be issued on March 11, 1996.

     2. Exercise.

     (a) Manner of  Exercise.  This  Warrant may be  exercised  as to all or any
lesser  number of full shares of Common Stock covered  hereby upon  surrender of
this Warrant,  with the Exercise Form attached  hereto duly  executed,  together
with the full Exercise  Price (as defined in Section 3) for each share of Common
Stock as to which this  Warrant  is  exercised,  at the  office of the  Company,
Celgene  Corporation,  7 Powder  Horn Drive,  Warren,  New Jersey  07059,  attn:
Secretary,  Telephone (908)  271-1001,  or at such other office or agency as the
Company may designate in writing, by overnight mail, with an advance copy of the
Exercise  Form  attached  as  Exhibit A  ("Exercise  Form") by  facsimile  (such
surrender and payment of the Exercise Price hereinafter  called the "Exercise of
this Warrant").








     (b) Date of  Exercise.  The  "Date of  Exercise"  of the  Warrant  shall be
defined  as the  date  that the  advance  copy of the  Exercise  Form is sent by
facsimile to the Company,  provided that the original  Warrant and Exercise Form
are  received  by the Company  within five (5)  business  days  thereafter.  The
original  Warrant and  Exercise  Form must be received  within five (5) business
days of the Date of Exercise,  or the exercise may, at the Company's  option, be
considered  void.  Alternatively,  the Date of Exercise  shall be defined as the
date the original  Exercise  Form is received by the Company,  if Holder has not
sent advance notice by facsimile.

     (c)  Cancellation  of Warrant.  This  Warrant  shall be  canceled  upon its
Exercise,  and,  as soon as  practical  after the Date of  Exercise,  the Holder
hereof  shall be  entitled  to  receive  Common  Stock for the  number of shares
purchased upon such Exercise,  and if this Warrant is not exercised in full, the
Holder shall be entitled to receive a new Warrant or Warrants  (containing terms
identical to this Warrant)  representing any unexercised portion of this Warrant
in addition to such Common Stock.

     (d) Holder of Record.  Each  person in whose name any Warrant for shares of
Common Stock is issued  shall,  for all  purposes,  be deemed to have become the
Holder  of  record  of such  shares  on the Date of  Exercise  of this  Warrant,
irrespective  of the date of delivery of such Warrant.  The person in whose name
this Warrant is  registered  shall be deemed to be the owner  thereof and of the
Warrant  evidenced  hereby for all  purposes.  Nothing in this Warrant  shall be
construed as conferring  upon the Holder  hereof any rights as a shareholder  of
the Company.

     3. Payment of Warrant Exercise Price.

     Payment of the Exercise Price may be made by either of the following,  or a
combination thereof, at the election of Holder:

     (i)  Cash  Exercise:  cash,  certified  check  or  cashiers  check  or wire
transfer; or

     (ii) Cashless  Exercise:  surrender of this Warrant at the principal office
of the Company  together  with notice of cashless  election,  in which event the
Company shall issue Holder a number of shares of Common Stock computed using the
following formula:

          X = Y (A-B)/A

where: X = the number of shares of Common Stock to be issued to Holder.

     Y = the number of shares of Common  Stock for which  this  Warrant is being
exercised.

          A = the Market Price of one (1) share of Common Stock (for purposes of
          this Section 3(ii), the "Market Price" shall be defined as the average
          closing  price of the Common Stock for the five (5) trading days prior
          to the Date of Exercise of this Warrant (the








          "Average Closing Price"),  as reported by the National  Association of
          Securities Dealers Automated  Quotation System  ("NASDAQ"),  or if the
          Common   Stock  is  not   traded   on   NASDAQ,   the   price  in  the
          over-the-counter market;  provided,  however, that if the Common Stock
          is listed on a stock  exchange,  the Market Price shall be the average
          Closing Price on such exchange.  If the Common Stock is/was not traded
          during the five (5) trading days prior to the Date of  Exercise,  then
          the closing price for the last publicly  traded day shall be deemed to
          be the closing price for any and all (if applicable)  days during such
          five (5) trading day period.

          B = the Exercise Price.


     4. Transfer and Registration.

     (a)  Transfer  Rights.  Subject  to the  provisions  of  Section  8 of this
Warrant,  this Warrant may be transferred on the books of the Company,  in whole
or in part, in person or by attorney,  upon  surrender of this Warrant  properly
endorsed.  This Warrant  shall be canceled upon such  surrender  and, as soon as
practicable  thereafter,  the  person to whom  such  transfer  is made  shall be
entitled to receive a new Warrant or Warrants as to the portion of this  Warrant
transferred,  and the Holder of this Warrant  shall be entitled to receive a new
Warrant or Warrants as to the portion hereof retained.

     (b) Registrable Securities.  The Common Stock issuable upon the exercise of
this Warrant constitute "Registrable Securities" under that certain Registration
Rights  Agreement  dated on or about  March 11,  1996  between  the  Company and
certain investors and,  accordingly,  has the benefit of the registration rights
pursuant to that agreement.

     5. Anti-Dilution Adjustments.

     (a) Stock  Dividend.  If the Company  shall at any time  declare a dividend
payable in shares of Common Stock, then the Holder hereof, upon Exercise of this
Warrant after the record date for the  determination  of Holders of Common Stock
entitled to receive such dividend, shall be entitled to receive upon Exercise of
this  Warrant,  in addition to the number of shares of Common  Stock as to which
this Warrant is Exercised, such additional shares of Common Stock as such Holder
would have received had this Warrant been  exercised  immediately  prior to such
record date and the Exercise Price will be proportionately adjusted.

     (b) Recapitalization or Reclassification.  If the Company shall at any time
effect a recapitalization, reclassification or other similar transaction of such
character  that the  shares  of Common  Stock  shall be  changed  into or become
exchangeable  for a larger or smaller number of shares,  then upon the effective
date thereof, the number of shares of Common Stock which the Holder hereof shall
be entitled to purchase  upon  Exercise of this  Warrant  shall be  increased or
decreased,  as the case may be, in direct proportion to the increase or decrease
in the  number of shares  of  Common  Stock by reason of such  recapitalization,
reclassification or similar transaction,








and the  Exercise  Price  shall be, in the case of an  increase in the number of
shares,  proportionally  decreased and, in the case of decrease in the number of
shares,  proportionally increased. The Company shall give the Warrant Holder the
same notice it provides to holders of Common Stock of any transaction  described
in this Section 5(b).

     (c)  Distributions.  If the Company shall at any time distribute to Holders
of Common Stock cash,  evidences of indebtedness  or other  securities or assets
(other than cash dividends or distributions payable out of earned surplus or net
profits for the current or preceding year) then, in any such case, the Holder of
this Warrant shall be entitled to receive,  upon exercise of this Warrant,  with
respect to each share of Common Stock issuable upon such Exercise, the amount of
cash or  evidences  of  indebtedness  or other  securities  or assets which such
Holder  would have been  entitled to receive  with respect to each such share of
Common  Stock as a result of the  happening  of such event had this Warrant been
Exercised immediately prior to the record date or other date fixing shareholders
to be affected by such event (the "Determination  Date") or, in lieu thereof, if
the Board of  Directors  of the Company  should so determine at the time of such
distribution,  a reduced  Exercise Price  determined by multiplying the Exercise
Price on the  Determination  Date by a fraction,  the  numerator of which is the
result  of such  Exercise  Price  reduced  by the  value  of  such  distribution
applicable  to one share of Common  Stock,  such value to be  determined  by the
Board in its discretion) and the denominator of which is such Exercise Price.

     (d) Notice of  Consolidation  or Merger.  If the Company  shall at any time
consolidate or merge with any other corporation or transfer all or substantially
all of its assets,  then the Company shall deliver  written notice to the Holder
of such merger,  consolidation or sale of assets at the same time as it provides
notice to holders of Common Stock,  and this Warrant shall  terminate and expire
immediately  prior  to the  closing  of such  merger,  consolidation  or sale of
assets.

     (e) Exercise  Price  Defined.  As used in this Warrant,  the term "Exercise
Price" shall mean the purchase  price per share  specified in this Warrant until
the occurrence of an event stated in subsection  (a), (b) or (c) of this Section
5 and  thereafter  shall  mean  said  price  as  adjusted  from  time to time in
accordance with the provisions of said  subsection.  No such adjustment shall be
made unless such adjustment  would change the Exercise Price at the time by $.01
or more; provided,  however,  that all adjustments not so made shall be deferred
and made when the aggregate  thereof would change the Exercise Price at the time
by $.01 or more. No adjustment  made pursuant to any provision of this Section 5
shall  have the  effect of  increasing  the  total  consideration  payable  upon
Exercise  of this  Warrant in  respect of all the Common  Stock as to which this
Warrant may be exercised.

     (f) Adjustments: Additional Shares, Securities or Assets. In the event that
at any time, as a result of an  adjustment  made pursuant to this Section 5, the
Holder of this Warrant shall, upon Exercise of this Warrant,  become entitled to
receive shares and/or other securities or assets (other than Common Stock) then,
wherever  appropriate,  all references herein to shares of Common Stock shall be
deemed to refer to and include such shares  and/or other  securities  or assets;
and








thereafter the number of such shares and/or other  securities or assets shall be
subject  to  adjustment  from time to time in a manner  and upon terms as nearly
equivalent as practicable to the provisions of this Section 5.

     6. Fractional Interests.

     No  fractional  shares or scrip  representing  fractional  shares  shall be
issuable upon the Exercise of this Warrant, but on Exercise of this Warrant, the
Holder hereof may purchase only a whole number of shares of Common Stock. If, on
Exercise of this Warrant, the Holder hereof would be entitled a fractional share
of Common Stock or a right to acquire a fractional  share of Common Stock,  such
fractional  share shall be disregarded  and the number of shares of Common Stock
issuable upon conversion shall be the next higher number of shares.

     7. Reservation of Shares.

     The  Company  shall at all  times  reserve  for  issuance  such  number  of
authorized and unissued shares of Common Stock (or other securities  substituted
therefor as herein  above  provided)  as shall be  sufficient  for  Exercise and
payment of the Exercise Price of this Warrant.  The Company covenants and agrees
that upon  Exercise of this  Warrant,  all shares of Common Stock  issuable upon
such Exercise shall be duly and validly issued,  fully paid,  nonassessable  and
not subject to preemptive  rights,  rights of first refusal or similar rights of
any person or entity.

     8. Restrictions on Transfer.

     (a) Registration or Exemption  Required.  This Warrant and the Common Stock
issuable on Exercise hereof have not been registered under the Securities Act of
1933, as amended,  and may not be sold,  transferred,  pledged,  hypothecated or
otherwise  disposed of in the absence of registration or the  availability of an
exemption from  registration  under said Act and the Holder has furnished to the
Company an opinion  reasonably  satisfactory to the Company to such effect.  All
shares of Common  Stock  issued  upon  Exercise  of this  Warrant  shall bear an
appropriate  legend to such  effect,  if  applicable.  This  Warrant  may not be
exercised, and any shares of Common Stock issuable on exercise hereof may not be
transferred  unless such exercise or transfer would not result in a violation of
the provisions of the Act.

     (b) Assignment. Assuming the conditions of (a) above regarding registration
or exemption have been satisfied, the Holder may sell, transfer,  assign, pledge
or otherwise dispose of this Warrant,  in whole or in part. Holder shall deliver
a  written  notice  to  Company,  substantially  in the  form of the  Assignment
attached  hereto as  Exhibit  B,  indicating  the  person or persons to whom the
Warrant shall be assigned and the  respective  number of warrants to be assigned
to each assignee.  The Company shall effect the assignment  within ten days, and
shall deliver to the  assignee(s)  designated by Holder a Warrant or Warrants of
like tenor and terms for the appropriate number of shares.

     (c)  Investment   Intent.  The  Warrant  and  Common  Stock  issuable  upon
conversion








are  intended  to be held for  investment  purposes  and not with an  intent  to
distribution, as defined in the Act.

     9. Benefits of this Warrant.

     Nothing in this Warrant  shall be construed to confer upon any person other
than the Company and the Holder of this  Warrant any legal or  equitable  right,
remedy or claim under this  Warrant and this  Warrant  shall be for the sole and
exclusive benefit of the Company and the Holder of this Warrant.

     10. Applicable Law.

     This  Warrant is issued under and shall for all purposes be governed by and
construed in accordance  with the laws of the state of Delaware,  without giving
effect to conflict of law provisions thereof.

     11. Loss of Warrant.

     Upon receipt by the Company of evidence of the loss, theft,  destruction or
mutilation of this Warrant,  and (in the case of loss,  theft or destruction) of
indemnity or security reasonably satisfactory to the Company, and upon surrender
and  cancellation of this Warrant,  if mutilated,  the Company shall execute and
deliver a new Warrant of like tenor and date.


     12. Notice or Demands.

     Notices  or  demands  pursuant  to this  Warrant to be given or made by the
     Holder of this Warrant to or on the Company shall be sufficiently  given or
     made if sent by certified or registered  mail,  return  receipt  requested,
     postage  prepaid,  or by overnight  delivery and  addressed,  until another
     address is designated  in writing by the Company,  Celgene  Corporation,  7
     Powder Horn Drive,  Warren,  New Jersey 07059, attn:  Secretary,  Telephone
     (908) 271-1001  Notices or demands  pursuant to this Warrant to be given or
     made  by  the  Company  to or on  the  Holder  of  this  Warrant  shall  be
     sufficiently  given or made if sent by certified or registered mail, return
     receipt requested, postage prepaid, or by overnight delivery and addressed,
     by the Holder,  Attn: Holder,  address: 200 Roswell Summit, Suite 285, 1080
     Holcomb Bridge Road,  Roswell GA, 30076 until another address is designated
     in writing by Holder.

          IN WITNESS  WHEREOF,  this Warrant  issued to ________________________
     is hereby executed and effective as of the date set forth below.

               Dated as of March , 1996 CELGENE CORPORATION

                                            By: ________________________________

                                    Print Name: ________________________________

                                         Title: ________________________________








                                    EXHIBIT A

                                  EXERCISE FORM

                             TO: CELGENE CORPORATION

     The  undersigned  hereby  irrevocably   exercises  the  right  to  purchase
____________  of the  shares of Common  Stock  CELGENE  CORPORATION,  a Delaware
corporation,  evidenced by the attached  Warrant,  and herewith makes payment of
the Exercise Price with respect to such shares in full,  all in accordance  with
the conditions and provisions of said Warrant.

     The undersigned agrees not to offer, sell, transfer or otherwise dispose of
any of such Common Stock,  except in accordance with the provisions of Section 8
of the Warrant,  and consents  that the  following  legend may be affixed to the
stock certificates for the Common Stock hereby subscribed for, if such legend is
applicable:

     "The  securities  represented  hereby  have not been  registered  under the
     Securities  Act  of  1933,  as  amended  (the  "Securities  Act"),  or  any
     provincial  or state  securities  law,  and may not be  sold,  transferred,
     pledged,   hypothecated  or  otherwise  disposed  of  until  either  (i)  a
     registration  statement under the Securities Act and applicable  provincial
     or state  securities laws shall have become  effective with regard thereto,
     or  (ii)  an  exemption  from  registration  under  the  Securities  Act or
     applicable  provincial or state  securities laws is available in connection
     with such offer, sale or transfer."

     The undersigned requests that stock certificates for such shares be issued,
and a warrant representing any unexercised portion hereof be issued, pursuant to
the  Warrant  in  the  name  of  the  Registered  Holder  and  delivered  to the
undersigned at the address set forth below:


Dated:

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                         Signature of Registered Holder

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                        Name of Registered Holder (Print)


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                                     Address
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                                    EXHIBIT B

                                   ASSIGNMENT

                    (To be executed by the registered Holder
                        desiring to transfer the Warrant)

FOR VALUE RECEIVED, the undersigned Holder of the attached Warrant hereby sells,
assigns  and  transfers  unto the  person or  persons  below  named the right to
purchase _______ shares of the Common Stock of CELGENE CORPORATION  evidenced by
the  attached  Warrant  and  does  hereby  irrevocably  constitute  and  appoint
_______________________  attorney to transfer  the said  Warrant on the books of
the Company, with full power of substitution in the premises.

Dated:                                    ______________________________
                                                     Signature


Fill in for new Registration of Warrant:

- -----------------------------------
                Name

- -----------------------------------
               Address

- -----------------------------------
Please print name and address of assignee
(including zip code number)

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NOTICE

The signature to the foregoing  Exercise Form or Assignment  must  correspond to
the name as written upon the face of the attached  Warrant in every  particular,
without alteration or enlargement or any change whatsoever.

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