Fig. 2. Results of smooth muscle content evaluation by Masson's trichrome staining. Mean of the smooth muscle and collagen fiber ratios of the different groups (graph) (×40; inset, ×100). DM, diabetes mellitus; ESWT, extracorporeal shock wave therapy; KH, Korean herbal formula. Data are expressed as means±standard deviations. ^*Statistical significance in comparison with the DM+ESWT+KH-204 group. ^**Statistical significance in comparison with the DM group.