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A M2-hFDM-CM accelerates artificial wound closure in hDFB wound scratch test. Representative images of hDFB wound closure with time treated with different macrophage-derived CMs. The yellow marks indicate the wound still uncovered with hDFB. B Quantitative analysis of wound closure at specific time points. Scale bar is 200 μm. Statistically significant difference (*p < 0.05, **p < 0.01, ***p < 0.001)
