Fig. 12. The result of tube formation assay. Huvecs were cultured in supernatant culture medium of different groups (silibinin, Sil-GelMA, GelMA and the control) for 6 hours. The tube formation phenomenon was observed by optical microscope. (A) The silibinin group, (B) the Sli-GelMA group, (C) the GelMA group, (D) the control group.
