FIG. 5.

IR-induced cleavage of Rad51 is abrogated in caspase 3-deficient MCF-7 cells. Lysates were prepared from control (C) MCF-7 cells and, at the indicated times after exposure to 20 Gy of IR, were subjected to immunoblot analysis with anti-caspase 7, anti-PARP, or anti-Rad51.