FGF2 and myocardial infarction: The mean myocardial infarct size in bFGF and 5-aza pre-treated MenSCs group (18.12 ± 5.33%) was less than that of the bFGF and 5-aza pre-treated BMSCs group (46.82 ± 8.33%), and MI group (53.46 ± 1.54%) (P < 0.05 and P < 0.01 respectively).