Exhibit 23.5


                  CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Experts" in Amendment
No. 1 to the Registration Statement (Form S-4) and the related Prospectus of
Hyseq, Inc. for the registration of 46,602,586 shares of its common stock and to
the inclusion and incorporation by reference therein of our report dated
February 2, 2000, with respect to the consolidated statements of operations,
stockholders' equity and cash flows for the year ended December 31, 1999,
included in its Annual Report (Form 10-K) for the year ended December 31, 2001,
filed with the Securities and Exchange Commission.

                                         /s/ Ernst & Young LLP

Palo Alto, California
December 12, 2002