FOSTER CITY, Calif.--(BUSINESS WIRE)--July 26, 2006--Applied Biosystems (NYSE:ABI - News), an Applera Corporation business, today announced the launch of a commercial reagent mix that enables accurate, quantitative, real-time gene expression analysis on very small or rare samples. The TaqMan® PreAmp Master Mix Kit is intended to address the challenge faced by researchers working with precious samples to extract enough mRNA to perform advanced gene expression analyses using real-time PCR (polymerase chain reaction).