Fig. 3From: Optimization of leukocyte-poor platelet-rich plasma preparation: a validation study of leukocyte-poor platelet-rich plasma obtained using different preparer, storage, and activation methodsCorrelations between the platelet concentration and (a) HGF, (b) PDGF-BB, and (c) IGF-1 levels. A significant positive correlation was found between the HGF and platelet concentrations (r = 0.60, p < 0.05), and between the PDGF-BB and platelet concentrations (r = 0.83, p < 0.05)Back to article page