Figure 2: Masson's trichrome stain. Masson's trichrome stain was used to evaluate the cavernous tissue via smooth muscle cell (blue)/collagen fibril (red) (SMC/CF). (a) Masson's trichrome staining in corporal tissue of Sham group, NC group, EGCG-10 group, and EGCG-100 group. (b) Statistical chart of SMC/CF ratio. Each bar depicted the mean values (± standard deviation) from n = 10 animals per group. *P < 0.05 versus NC group. #P < 0.05 versus Sham group, ##P < 0.01 versus Sham group. Scale bar = 400 μm.