Fig. 8

a–g H&E staining images of different groups of wound areas and detailed images of H&E staining corresponding to each group. h–n Masson's stained images of wound areas in each group and detailed images of Masson's staining corresponding to each group. The red arrow indicates the blood vessel. Blank, Gauze dressing, PCL/MAT, Chitosan dressing, PCL/R + BMSCs, PCL/M + BMSCs, and PCL/MAT + BMSCs dressing, respectively