Fig. 2From: Positive effect on spinal fusion by the combination of platelet-rich plasma and collagen-mineral scaffold using lumbar posterolateral fusion model in ratsThe concentration of the growth factors in PRP and PPP. (a) The concentration of BMP-2. (b) The concentration for BMP-7. (c) The concentration of PDGF. The concentration of BMP-2 and PDGF in PRP was dramatically higher than that in PPP. *p value < 0.05; **p value < 0.01Back to article page