Fig. 2From: Pure platelet-rich plasma promotes semaphorin-3A expression: a novel insight to ameliorate intervertebral disk degeneration in vitroComposition of whole blood, L-PRP, and P-PRP. A, B Concentrations of platelets and leukocytes. C–G Concentrations of TGF-β, PDGF, VEGF, IL-1β, and TNF-α. ap < 0.05 versus whole blood; bp < 0.05 versus L-PRPBack to article page