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. 2021 Feb 20;6(9):2841–2853. doi: 10.1016/j.bioactmat.2021.02.007

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© 2021 [The Author/The Authors]

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

PMC Copyright notice

Fig. 7 — Collagen deposition and reepithelization in diabetic wounds. (A) H&E staining of a healing wound; (B) Masson's trichrome revealed collagen deposition in wounds; (C) quantitative wound healing data; *significant difference compared with high-dose engineered miR-31 exosomes (p < 0.05); **significant difference compared with high-dose engineered miR-31 exosomes (p < 0.01); ***significant difference compared with high-dose engineered miR-31 exosomes (p < 0.001); ****significant difference compared with high-dose engineered miR-31 exosomes (p < 0.0001).