HGF and myocardial infarction: In the HGF group, the myocardial infarct and peri-infarct zone had higher HGF expression when compared with the normal zone (Fig.1A and 1C, P < 0.01), and the normal zone was lowest in each of the three myocardial zones (Fig.1A and 1C, P < 0.01).These results indicated that the HGF gene expression could be mediated by the adenovirus vector in this porcine chronic myocardical infarction (CMI) model.