FIG. 2.

Growth factor release kinetics. Hydrogels prepared with either PBS (control) or heparin, and growth factors FGF2 (A), TGFβ1 (B), or VEGF (C). The amount of growth factor in the supernatant at different time points was determined by ELISA. Graphs show slow release of growth factor from heparin-containing gels. PBS, phosphate-buffered saline; FGF2, fibroblast growth factor basic; TGFβ1, transforming growth factor β1; VEGF, vascular endothelial growth factor; ELISA, enzyme-linked immunosorbent assay. Color images available online at www.liebertonline.com/tea