Figure 4: Histological evaluation of MSCs engrafted in soleus muscle. (A) MSCs injection ameliorates the histological phenotype. Muscle sections were stained with hematoxylin and eosin (H&E). (B) The cross-sectional area (CSA) of soleus muscle fibers. Differences in muscle fiber size were visually confirmed by H&E staining of the CSA at 1 and 2 weeks (*P<0.05, compared to HS+Saline group; #P<0.05, compared to HR+Saline group). (Original magnification 200X, scale bars=50 μm).