Fig. 5From: MXenes-integrated microneedle combined with asiaticoside to penetrate the cuticle for treatment of diabetic foot ulcerInvestigation on tissue regeneration and angiogenesis after treatments. Images of H&E (first row), Masson’s trichrome (second row) staining of diabetic wounds in different groups on day 14. Black arrows indicate the edges of the woundsBack to article page