SANTA CLARA, Calif.--(BUSINESS WIRE)--Affymetrix Inc. (NASDAQ:AFFX) today announced the full commercial launch of the GeneChip® Mouse and Rat Gene 1.0 ST Arrays, the latest additions to the Gene 1.0 ST Array System. The arrays provide researchers with a more accurate and informative alternative for mouse and rat gene expression detection, all in a cost-effective and easy-to-use format.