Figure 1. Microscopic evaluation of wound proangiogenic repair after SW and hADSC treatments. (A) the frozen section immunofluorescence showed that hADSCs (CM-DIL, red) differentiated into vascular endothelial cells (CD31, green) to promote wound healing. (B–D) the number of vessels per field in each group at day 14 and day 21. Scale bars indicate 100 μm. *P < 0:05, **P < 0:01, and ***P < 0:001.