The effects of TF-SB on the angiogenesis of CAM. The chick chorioallantoic membrane of 7-day-old chick embryos were treated with various concentrations of TF-SB and incubated for 48 h. A: blank control group; B: 40 μg/mL TF-SB group; C: 80 μg/mL TF-SB group; D: 120 μg/mL TF-SB group. The angiogenesis around the gelatin sponges was photographed with an anatomical microscope. Values represent mean ± SD from fifteen eggs. *
p < 0.05, **
p < 0.01 compared with the control group.