Overexpression of bcl-2 protects Dex-induced apoptosis in ARP-1 cells. (A) WCEs prepared from parental and bcl-2 ARP-1 transfectants were Western blotted with antibody specific for bcl-2 protein. (B) Parental and bcl-2 ARP-1 transfectants were treated with and without Dex (0.1 μmol/L) for 48 hours. Percentage of apoptosis was measured by ISEL.