PECAM1 and myocardial infarction: To further investigate the role of miRNA-125b in EPC-mediated neovascularization, miR-125b-overexpressed and NC control EPCs were transplanted by intramyocardial injections into the mice immediately after surgical-induction of MI, the cardiac function was evaluated by echocardiography, and the capillary density in the infarct border zone was assessed by immunohistology staining of CD31.