Fig. 2From: β-Lapachone Induces Cell Cycle Arrest and Apoptosis in Human Colon Cancer CellsEffects of β-lapachone on cell cycle progression in human colon cancer cells. SW480, SW620, and DLD1 cells were treated with DMSO alone (control) or β-lapachone (2.5 or 5 µM) for 4 hr, further incubated in drug-free medium for 20 hr, and then analyzed for cell cycle distribution by flow cytometry. Shown here are DNA histograms.Back to article page