Left ventricular ejection fraction (LVEF) at each time point in the 2-month study of swine myocardial infarction (MI)/heart failure (HF) for sham (MI + saline) versus BB-R12 therapy at low, medium, and high doses (n = 4 to 5 per group). *p < 0.05, **p < 0.01 compared with sham, mixed effects regression model; data are represented as mean ± SEM.