The effect of C3SD on the expression and localization of caveolin, and non-phosphorylated and phosphorylated forms of LTCC. A: representative images of myocytes stained with anti-caveolin (Cav-3, left column), total (phosphorylated + non-phosphorylated) LTCC (tLTCC, middle column) and phosphorylated LTCC (pLTCC, right column) antibodies, taken from untreated (top row), scram- (middle row) or C3SD-treated (lower row) myocytes. Scale bar represents 50 μm. B: representative power spectrum of a longitudinal scan of an antibody-stained cell. Spectrum corresponds to the control tLTCC image (top, middle column). C: Mean z-line staining intensity in control and in Scram- and C3SD-treated cells for Cav-3 (n = control 4, Scram 7, C3SD 10), Total LTCC (tLTCC, n = control 6, Scram 7, C3SD 6) and phosphorylated LTCC (pLTCC, n = control 22, Scram 15, C3SD 20). **, p < 0.01; ***, p < 0.001; Bonferroni post hoc analysis, 1-way ANOVA.