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(a) Images of the wound healing site on the 3rd, 7th and 14th day; (b) Schematic presentation of the wound healing site on the 3rd, 7th and 14th day; c) Statistical data of wound closure ratio (n = 5); d) Pictures of regenerating granulation tissue on the 7th day (granulation tissue: blue arrows), scale bar: 400 μm; e) The results of the thickness of the regenerated granulation tissue on the 7th day (n = 5). *P < 0.05, **P < 0.01.
