Figure 4. Effect of homoisoflavanone on the viability of human umbilical vein endothelial cells. Various concentrations of homoisoflavanone (1-10 μM) were treated on human umbilical vein endothelial cells (HUVECs), and cells were incubated for two days. Cell viability was measured by MTT assay. Each value represents means ± SEM from three independent experiments (*p>0.05).