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Effects of exosomes on HDFs. (A) Wound recovery rates of HDFs, modeled by cell scratch assays. (B) The scratch closure rate is presented over time (n = 3). (C) HDF proliferation with the treatment of different exosomes, n = 3, n.s. means no significant difference, *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001.
