Fig. 1From: β-Lapachone Induces Cell Cycle Arrest and Apoptosis in Human Colon Cancer CellsEffects of β-lapachone on cell survival of human colon cancer cells. After 4 hr treatment with β-lapachone at concentrations ranging from 0.5 to 20 µM, SW480, SW620, and DLD1 cells were incubated in drug-free medium for 14 days and then analyzed for cell survival by colony formation assays. The bars represent standard deviation of three independent experiments.Back to article page