The interaction between bcl-2, bax, and caspase-3 in the absence or presence of CCL21.

<p>A549 (A) and H460 (B) cells in the absence or presence of CCL21 (100 ng/mL) for 24 h were subjected to immunoprecipitation with antibodies against bcl-2 or IgG, followed by western blotting for bax and caspase-3 (a). Reciprocal immunoprecipitation with antibodies against bax or IgG were analyzed by western blotting for bcl-2 and caspase-3 (b). Reciprocal immunoprecipitation with antibodies against caspase-3 or IgG were analyzed by western blotting for bcl-2 and bax (c).