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. 2015 Jun 25;5:11594. doi: 10.1038/srep11594

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(a) The number of EPCs remaining in the diabetic wound of the adenosine-stimulated EPC group was 4.35-fold higher than that of the unstimulated EPC group. (b) The ratio of CD31-positive cells relative to the number of EPCs remaining in the diabetic wound. In the adenosine-stimulated EPC group, the number of remaining stem cells participating in angiogenesis was greater than that in the unstimulated EPC group. (c–d) Vascular endothelial cells were stained with a CD31 antibody (green), and human-derived cells were stained with an hNA antibody (red). *p < 0.05 (n = 10) versus control. Values are the mean ± SE.