Figure 1. β-Actin mRNA expression. (A) β-Actin mRNA expression, expressed as a function of the C_t value, in HTM cells exposed to TGF-β1 (5 ng/ml) treatment during the indicated times. (B) β-Actin mRNA expression in HTM cells subjected to cyclic mechanical stress and MAPK inhibitors. Statistical significance between groups was assessed by the paired Student's t-test (n=3).