Fig. 4From: Release of Mitochondrial Cytochrome C in Both Apoptosis and Necrosis Induced by β-Lapachone in Human Carcinoma CellsCytochrome C release induced by β-lapachone is associated with decrease in mitochondrial membrane potential. Cells were stained with rhodamine 123 for 10 min, followed by treatment with DMSO or β-lapachone at 0.5 µM or 4 µM for 4 hr, and then incubated in drug-free mediumBack to article page