Fig. 7

Effects of VA on the key proteins of apoptosis in MDA-MB-231 cells. Immunoblots of Bcl-2, Bax, Bad and pBad protein levels in MDA-MB-231 cells untreated or treated with VA for 24 and 48 h. Actin was used as a protein loading control. Histograms represent the mean ± SD of three separate experiments in which band intensities were evaluated as optical density (OD) and expressed as fold change relative to control. *p < 0.05 and **p < 0.005 vs. Control (C)