Fig. 4. Bcl-2 interacts with multiple pro-apoptotic Bcl-2 family proteins in primary ALL cells.
A. Bcl-2 was immunoprecipitated from ALL-19 cells and subjected to immunoblotting for Bcl-2 and the indicated pro-apoptotic Bcl-2 family members. WCE, whole cell extract; Sup, supernatant; IP, immunoprecipitate; eluant, detergent eluant of immunoprecipitate. Samples were obtained from immunoprecipitations performed in the absence (−) or presence (+) of Bcl-2 antibody. Asterisks indicate non-specific bands. B, C, and D. Bax (panel B), Bim (panel C) or Bik (panel D) were immunoprecipitated from ALL-19 cells, and subjected to immunoblotting for the proteins indicated.