EXHIBIT 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the Registration Statements (Form S-8 No. 333-11299, No. 333-35287, No. 333-85575, No. 333-34320, No. 333-52804, No. 333-59158, No. 333-59160, No. 333-123452, No. 333-129269 and No. 333-151771) pertaining to the 1993 Stock Plan, the 1996 Nonemployee Directors Stock Option Plan, the 1998 Stock Incentive Plan, the GMS/Affymetrix 1998 Stock Plan, the Affymetrix/Neomorphic, Inc. 1998 Stock Option Plan, the Amended and Restated 2000 Equity Incentive Plan of Affymetrix, Inc. and the ParAllele BioScience, Inc. 2001 Stock Option Plan of Affymetrix, Inc. of our reports dated March 1, 2010, with respect to the consolidated financial statements and schedule of Affymetrix, Inc., and the effectiveness of internal control ove r financial reporting of Affymetrix, Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2009.
/s/ ERNST AND YOUNG LLP | |
San Jose, California March 1, 2010 |