Figure 8: Immunohistochemical staining for CD31 showed an increase of vessel formation in the C + ES group compared with the other groups.

(A) Representative views of CD31-positive vessels (arrows) in the grafts from each group. (B) Quantitative analysis of CD31-positive vessels in each group after 2 months of implantation. Three samples in each group and five views from each sample were analyzed, *p < 0.05.