VEGFB and myocardial infarction: Also, despite the fact that blood perfusion in the VEGF-B TG and WT hearts was similar in the basal state (Bry et al, 2010), the VEGF-B TG hearts had better perfusion in the non-infarcted myocardium and border region after MI, indicating that the significance of the improved coronary collateral reserve and associated changes in substrate utilization becomes apparent in pathological settings.