Figure 2

Ovarian cancer cells have differing levels of native resistance to cisplatin. Human OC cell lines SKOV3, OVCAR3, OV-90, 3AO and SKOV3^DDP were treated with increasing concentrations of cisplatin (0–500 umol/L) for 72 h. The viabilities indicated on the y axis were determined by MTT assays and normalized to control. Data shown are means ± SE for n = 3 independent experiments.