(A-B) mouse embryonic fibroblasts (MEF) from FoxM1fl/fl, sm-FoxM1+/−, and sm-FoxM1−/− mice were subjected to Western blotting for a panel of SMC contractile proteins. The quantification of these proteins was shown in (B). (C-D) mouse embryonic fibroblasts (MEF) from FoxM1fl/fl, sm-FoxM1+/−, and sm-FoxM1−/− mice were subjected to Western blotting for Smad and pSmad. The quantification of these proteins was shown in (D). n = 5. Data are presented as mean ± SEM. *, p < 0.05; **, p < 0.01.