Pien Tze Huang Inhibits Hypoxia-Induced Angiogenesis via HIF-1α/VEGF-A Pathway in Colorectal Cancer

Figure 1

The intrinsic cytotoxicity of PZH in HUVECs. HUVECs cells were treated with the indicated concentrations of PZH for 24 h. Cell viability was determined by MTT assay. The data were normalized to the viability of control cells. Data are averages with SD (error bars) from at least three independent experiments.