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hAECs increased capillary density in diabetic wounds. Representative immunohistochemistry staining of CD31 at day 10 after wounding in the hAEC group (a) and PBS group (b). Statistical analysis of CD31+ newly formed vessels showed that neovascularization was more obvious in hAEC-treated wounds (c). Data was shown as means ± SD; n = 6; ∗∗P < 0.01; scale bars: 50 μm (a, b).
