Fig. 4From: Porcine placenta extract improves high-glucose-induced angiogenesis impairmentPPE improved HG-induced angiogenesis impairment. HUVECs were treated with optimal PPE concentrations. The tube formation was observed every 2 h under inverted microscopy. Each bar represents in mean ± SEM. * p < 0.05 (One way-ANOVA, 2-time independent, n = 6)Back to article page