Fig. 6From: Thermosensitive black phosphorus hydrogel loaded with silver sulfadiazine promotes skin wound healingHistological analysis of skin wounds in different groups on day 3, day 7 and day 14. A HE staining and B Masson staining results of skin tissue. Scale bar: 100 μm. C Epidermal thickness map at day 7. D Masson staining quantitative analysis of collagen fiber content (%) in different groups. (*P < 0.05, **P < 0.01)Back to article page