Number                     Shares

Immecor Corporation
Incorporated under the laws of the State of California
See Reverse for Statements relating to Rights, Preferences, Privileges,
if any.
This Certifies that                                         CUSIP 452518  10  3
- -------- is the owner of --------- Fully paid and nonassessable Shares
of Common Stock of
Immecor Corporation
     transferable  only on the books of the  Corporation by the holder hereof in
person or by Attorney,  upon surrender of this  Certificate  properly  endorsed.
This  certificate  is not valid until  countersigned  by the Transfer  Agent and
Registrar.
     Witness the facsimile seal of the Corporation and the facsimile  signatures
of its duly authorized officers. Dated:
Secretary                           President

     A statement of the rights,  preferences,  privileges and restrictions to or
imposed  upon the  respective  classes or series of shares and upon the  holders
thereof as established,  from time to time, by the Articles of  Incorporation of
the  Corporation  and by any  certificate  of  determination,  and the number of
shares constituting each class and series and the designations  thereof,  may be
obtained by the holder hereof upon written  request and without  charge from the
Secretary of the Corporation at its corporate headquarters.

     The following  abbreviations,when  used in the  inscription  on the face of
this  certificate,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:
         TEN COM -- as tenants in common
         UNIF GIFT MIN ACT-- ..............................Custodian
 ................(Cust).............(Minor)
         TEN ENT  -- as tenants by the entireties
         JT TEN  -- as joint tenants with right of survivorship
          under Uniform Gifts to Minors Act
 ..........................................(State).
                      and not as tenants in common
         UNIF TRF MIN ACT--...........................Custodian (until age ....)
(Cust).................under
Uniform Transfers
(minor) to Minors Act............(State).

Additional  abbreviations may also be used though not in the above list.

For Value Received, _____ hereby sell, assign and transfer unto

Please insert Social Security or other Identifying Number of Assignee
- ----------------------------------------------------------------------
Please Print or Typewrite Name and Address, including Zip Code, of Assignee
- ----------------------------------------------------------------------

_________________________________________________________________ Shares
     of the capital stock represented by the within  Certificate,  and do hereby
irrevocably constitute and appoint
- ----------------------------------------------------------------------
Attorney
     to  transfer  the said Stock on the books of the within  named  Corporation
with full power of substitution in the premises. Dated ______________ 19_____

Signed __________________________
Signed __________________________

     NOTICE:  THE SIGNATURE OF THIS  ASSIGNMENT MUST CORRESPOND WITH THE NAME(S)
AS  WRITTEN  UPON  THE FACE OF THE  CERTIFICATE  IN  EVERY  PARTICULAR,  WITHOUT
ALTERATION OR ENLARGEMENT, OR ANY CHANGE WHATEVER.
Signatures Guaranteed

By ______________________________
     THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR  INSTITUTION
(BANKS,  STOCKBROKERS,  SAVINGS  AND LOAN  ASSOCIATION  AND CREDIT  UNIONS  WITH
MEMBERSHIP IN AN APPROVED  SIGNATURE  GUARANTEE  MEDALLION  PROGRAM) PURSUANT TO
S.E.C. RULE 17ad-15.