Fig. 8.

Levels of VEGF, bFGF, BMP-2, OCN, and Col-1 in supernatants were determined by ELISA. VEGF (a), bFGF (b), BMP-2 (c), OCN (d), and Col-1 (e) in supernatants. *p < 0.05. In the control intra-group: #p < 0.05 vs. 3 days; △p < 0.05 vs. 7 days; ▲p < 0.05 vs. 14 days. In the CGF intra-group: §p < 0.05 vs. 3 days; ◇p < 0.05 vs. 7 days; ◆p < 0.05 vs. 14 days. ELISA enzyme-linked immunosorbent assay, BMP bone morphogenetic protein, Col-1 type I collagen, OCN osteocalcin, VEGF vascular endothelial growth factor, bFGF basic fibroblast growth factor, PDCs periosteum-derived cells. All data were presented as the means ± SD. All experiments were performed independently (each experiment used PDCs and CGF from a different rabbit) and repeated three times