Fig. 6

Collagen deposition of wounds promoted by MSGMSC-exos and ADSC-exos A Representative images of Masson staining (scale bars = 1 mm) and immunohistochemical staining of type III collagen and type I collagen (scale bars = 100 μm) in four groups. B Quantitative analysis of overall collagen expression, collagen III and collagen I deposition, and collagen I/ collagen III ratio (n = 3). *p < 0.05, **p < 0.01, ***p < 0.001