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hAFSC-exo promotes the regeneration of nerves and vessels during wound healing in rats. (A–C) IF staining and qRT-PCR analysis of Nestin (nerve) and CD31 (vessel) in the healed tissues. (D,E) IF staining and qRT-PCR analysis of Ki67 in the healed tissues. Scale bar = 300 μm; *P < 0.05; **P < 0.01; ***P < 0.001; mean ± SD; n = 5. DAPI, 4′,6-Diamidino-2-phenylindole; IF, immunofluorescence.
