PGF and myocardial infarction: Systemic delivery of recombinant PlGF also stimulates neovascularization in the infarct scar in mice when given during a one week period after MI.3 A recent study revealed that intramyocardial administration of PlGF1 protein increases endothelial cell density in the rat infarcted myocardium, inhibits left ventricular (LV) dilatation and preserves LV global function [13].