Figure 1.

Expression levels of Bcl-2 and Bcl-xL proteins in MDA-MB-231, MDA-MD-453, BT-474, and ZR-75-1 cells. (a) Western blot analysis of Bcl-2 and Bcl-xL expression. (b) Quantification of Bcl-2 and Bcl-xL expression by densitometric analysis. The relative expression of Bcl-2 and Bcl-xL in MDA-MB-453 cells was compared with the expression in MDA-MB-231, BT-474, and ZR-75-1 cells. Results are from two representative, independent experiments.