The Bcl-2 gene family encodes a set of proteins involved in apoptotic inhibition, which are commonly analyzed during the performance of a Bcl-2 apoptosis assay. The ApoPrimer Set (Bcl-2 family) for RT-PCR is composed of a set of primers used to amplify cDNA derived from the mRNA of seven Bcl-2 family members (mcl-1, bfl-1, bax-alpha, bcl-2, bak, bik, bcl-x), as well as a beta-actin control. A positive control RNA is also included. The beta-actin primer is a useful internal control for sample quantification and for comparison between samples. PCR products generated from the positive control RNA can be distinguished from target mRNA due to size differences of the amplified products.