Figure 6. H&E staining of four groups ten weeks after transplantation. A: Control group: Epithelial structure was disordered, and numerous inflammatory cells and neovascularization emerged. B: AM group: Epithelium was integrated and some inflammatory cells infiltrated in the stroma. C: Non-induced MSC group: Incomplete epithelial hyperkeratosis and inflammatory cell infiltration. D: Induced MSC group: Epithelium was intact with a few lymphocytes and neovascularization infiltration. The magnification was 200×.