To study the BCL2 family proteins involved in paclitaxel-induced apoptosis in ovarian cancer cells, we treated six ovarian cancer cell lines, three that are sensitive and three that are insensitive to paclitaxel-induced killing (Supplementary Fig. 9a), and assessed changes of BCL2 family proteins by western blotting (Fig. 5b). Here, BCL2 is linked to ovarian carcinoma.