October 14, 1999 Affymetrix, Inc. 3380 Central Expressway Santa Clara, California 95051 Dear Ladies and Gentlemen: In connection with the registration under the Securities Act of 1933, as amended, of 1,070,000 shares of Common Stock, par value $.01...Affymetrix Inc • October 14th, 1999 • Services-commercial physical & biological research
