Affymetrix to Webcast Presentation at Deutsche Bank Health Care Conference

Affymetrix, Inc. (Nasdaq:AFFX) today announced it will
webcast its presentation at the Deutsche Bank 2006 Health Care
Conference in Boston, MA. Greg Schiffman, Executive Vice President and
Chief Financial Officer, will provide a company overview at 11:15 a.m.
ET on Wednesday, May 3rd.
   A webcast of the presentation will be available live and by
replay. To access both the live and archived webcast, please go to
www.affymetrix.com and click on the "Investors" link. The archived
replay will be available 24 hours after the live presentation and will
be accessible for 30 days.

   About Affymetrix

   Affymetrix scientists invented the world's first high-density
microarray in 1989 and began selling the first commercial microarray
in 1994. Since then, Affymetrix GeneChip(R) technology has become the
industry standard in molecular biology research. Affymetrix technology
is used by the world's top pharmaceutical, diagnostic and
biotechnology companies as well as leading academic, government and
not-for-profit research institutes. More than 1,400 systems have been
installed around the world and nearly 4,000 peer-reviewed papers have
been published using the technology. Affymetrix' patented
photolithographic manufacturing process provides the most information
capacity available today on an array, enabling researchers to use a
whole-genome approach to analyzing the relationship between genetics
and health. Affymetrix is headquartered in Santa Clara, Calif., with
manufacturing facilities in Sacramento, Calif., and Bedford, Mass. The
company maintains important sales and marketing operations in Europe
and Asia and has about 1,100 employees worldwide. For more information
about Affymetrix, please visit the company's website at
www.affymetrix.com.

   NOTE: Affymetrix, the Affymetrix logo, and GeneChip are registered
trademarks owned or used by Affymetrix, Inc.