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. 2024 Apr 29;25(9):4838. doi: 10.3390/ijms25094838

Figure 2.

Figure 2

Histopathological analysis of the oral and skin wound tissue during wound healing. (A) H&E staining of oral and skin tissues surrounding punch biopsy wound region. PBM treatment promotes oral and skin wound healing. (B,C) Quantification analysis of the thickness of the skin and oral sound region epidermis. On day 3 after injury, the epidermis of the skin wound treated with PBM was significantly thicker than the natural healing tissue. Data are shown as the mean ± SEM. ** p < 0.01. Scale bar = 500 μm. Red arrow: Epidermal thickness.