Form of Amendment To Stock Option Agreement

EXHIBIT 10.37


Aclara Biosciences, Inc.

1288 Pear Avenue

Mountain View, CA 94043

Dear _______________:


You have previously been granted certain options to purchase Common Stock of ACLARA BIOSCIENCES, INC., a Delaware corporation (the " Company" ) as described on Exhibit A attached hereto (collectively, the " Options" ).

The Company hereby seeks to amend the terms of the Options, effective as of May 26, 2004, to provide you with an extension of time to exercise your Options in certain circumstances.


Specifically, notwithstanding anything to the contrary in the plans or agreements governing your options generally, the Options may be exercised for eighteen (18) months after termin ...