Fig. 7.

(a) Morphological results of wound healing site after treatment for 3 days, 7 days and 14 days, and Masson's trichrome staining at the wound site on the 7th day, scale bar: 200 μm; (b) Newborn hair follicles on 14th day; (c) Regeneration of blood vessels on 7th day; (d) Collagen amount by measuring the content of hydroxyproline. *P < 0.05, **P < 0.01.