Fig. 2

The effect of TGF-β1 on BRCA1/Smad3 signaling. a, b Western blot showing BRCA1 expression. Data are expressed as the mean ± SD. c, d Western blot showing the Smad3 expression and phosphorylated Smad3. Data are expressed as the mean ± SD. e, f Immunoprecipitation analysis of the relationship between Smad3 and BRCA1. ***P < 0.001