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Myocardial regeneration in MSC-treated hearts. Immunohistochemical evaluation of the subendocardial rim of infarcted myocardium 10 d postinjection. (A) Rim of c-Kit-positive myocytes (filled arrow) is visible along the infarct border in both groups and within capillaries (open arrow) in MSC but not in control group. (B) Ki67-positive myocytes present within MSC-treated heart.
