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The in vivo evaluation of wound healing after treatment with different hydrogels. (A) Wound images from the four individual groups (blank control, Gel-PLL/MeTro, Gel-QK, and bilayer) at 0, 7, and 14 days. (B) Traces of wound closure. (C) Statistical results of the wound healing rates. ** p < 0.01. Reproduced from [94], with permission from Elsevier, 2022.
