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(A) SEM of PLA fibers and NC-loaded PLA fibers; (B) The schematic of mouse wound-healing model; (C) The effect of different dressings on wound closure of full-thickness excisional wounds in mice; representative images wounds of each group during 14 days; (D) Percentage of wound area in each group over 14 days.(*, p < 0.05; **, p < 0.001; ***, p < 0.0001).
