Figure 7From: Cooperative effects in differentiation and proliferation between PDGF-BB and matrix derived synthetic peptides in human osteoblasts Calcification indexed by van Kossa staining for p-15, PDGF, and PDGF/p-15 combination. Increase in calcification was significantly higher in PDGF/p-15 than control at days 5 and 10 (*p < 0.05).Back to article page