Fig. 6. Evaluation of smooth muscle content in the corpus cavernosum. Representative images of the corpus cavernosum stained with alpha-smooth muscle actin (α-SMA) in each group (A; scale bar: 200 µm). The ratio of α-SMA area to the whole cavernosum area was evaluated (B). Data are reported as mean±standard deviation (n=6 per group). N.S. means not significant using Bonferroni’s multiple t-tests.