HGF and myocardial infarction: HGF group has high HGF expression with Western blot, less myocardial infarct sizes by electroanatomical mapping (HGF group versus after saline group, 5.28±0.55 cm2 versus 9.06±1.06 cm2, P<0.01), better cardiac function with Gated-Single Photon Emission Computed Tomography compared with those in saline group.