AFFX Affymetrix, Inc.

Affymetrix to Webcast Presentations at November Financial Conferences SANTA CLARA, Calif., Nov. 10 /PRNewswire-FirstCall/ -- Affymetrix, Inc. (NASDAQ:AFFX) today announced that company management will provide an overview of the company and outline future growth opportunities at two upcoming financial conferences. Greg Schiffman, Senior Vice President and CFO will present at the Credit Suisse First Boston Annual Health Care Conference, which is being held in Phoenix, Arizona. A live transmission of the presentation will take place at 3 p.m. MST/2 p.m. PST on Wednesday, November 17th. An archived webcast will be available through November 24th, 2004. Mr. Schiffman will also present at the Lehman Brothers Small Cap Conference which is also being held in Phoenix. A live transmission of the presentation will take place at 10 a.m. MST/9 a.m. PST on Thursday, November 18th. An archived webcast will be available through November 25th, 2004. The live webcast and archived replay can be accessed by visiting Affymetrix' Internet website at http://www.affymetrix.com/ under the "Investors" tab. About Affymetrix Affymetrix is a pioneer in creating breakthrough tools that are driving the genomic revolution. By applying the principles of semiconductor technology to the life sciences, Affymetrix develops and commercializes systems that enable scientists to improve the quality of life. The Company's customers include pharmaceutical, biotechnology, agrichemical, diagnostics, and consumer products companies, as well as academic, government, and other non-profit research institutes. Affymetrix offers an expanding portfolio of integrated products and services, including its integrated GeneChip(R) brand platform to address the growing markets focused on understanding the relationship between genes and human health. Additional information on Affymetrix may be found at http://www.affymetrix.com/. DATASOURCE: Affymetrix, Inc. CONTACT: Doug Farrell, Vice President of Investor Relations of Affymetrix, Inc., +1-408-731-5285 Web site: http://www.affymetrix.com/

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