Figure 4

H&E staining of wounds in the blank, PVA, L-PRF, and 1% G-L-PRF/PVA groups for different days (scale bar in A = 2 mm). (B) The horizontal distance between the wound margin was measured using Image-Pro Plus 6.0 software. Bidirectional arrows indicate horizontal distances. (C) H&E images of sections after treatment with four groups at different time points. E = epithelium, D = dermis, G = granulation tissue, M = muscle (scale bar = 100 μm).