Figure 2. Prx II−/− DMSCs showed less skin wound healing than Prx II+/+ DMSCs. (A) Prx II protein-expression levels in Prx II+/+ and Prx II−/− DMSCs. (B) Overall observed morphological changes in wound healing after treatment. (C) Wound-area changes observed during wound healing. *p < 0.05, ** p < 0.01, when compared with Prx II−/− DMSCs. The data shown represent the mean ± SD (n = 6). (D) Histological images (H&E staining) of wounds. Wounds are indicated with dashed imaginary lines.