FIGURE 2.

TXL promotes angiogenesis under hypoxia. A, Vascular endothelial cells were treated with different doses of CoCl₂ as a hypoxia inducer, and an MTT assay was used to observe the effect of CoCl₂ on the proliferation of endothelial cells. Values are given as mean ± SD; *P < 0.05 versus other groups. B, Vascular endothelial cells were treated with different doses of TXL, and an MTT assay was used to observe the effect of TXL on the proliferation of endothelial cells. Values are given as mean ± SD; *P < 0.05 versus other groups. C, A tube formation assay demonstrated that TXL promoted tubule morphology and angiogenesis, as observed by microscopy.