Anti-Bcl-2-scFv-TAT is a Bcl-2-specific antibody. The various antiapoptotic Bcl-2-family proteins were immunoprecipitated (IP) using their specific antibodies. Each immunoprecipitated protein was first identified by Western blotting (WB) with its specific antibody (top row). The same immunoblot was probed with anti-Bcl-2-scFv-TAT and protein A-HRP as secondary antibody (bottom row). One representative experiment of 3 is shown.