Fig. 5From: Optimization of leukocyte-poor platelet-rich plasma preparation: a validation study of leukocyte-poor platelet-rich plasma obtained using different preparer, storage, and activation methodsConcentrations of (a) HGF, (b) PDGF-BB, and (c) IGF-1 in the PRP samples. PDGF-BB levels were significant higher in the CaCl2 group (p < 0.05). No significant differences were observed in the concentrations of the other growth factors between the E and NE groups (p > 0.05)Back to article page