Comparison of the dose response plot of cisplatin after 72 h in the A2780R cells. Both plots display cell viability relative to non-treated cells vs -log [cisplatin]. (A) measure with the MTT assay and (B) measure with the CloneSelect Imager system. The pEC50 value is denoted at the crossing of the solid lines. The concentration of cisplatin used (8.47 nM, 25.4 nM, 76.2 nM, 0.229 μM, 0.686 μM, 2.06 μM, 6.17 μM, 18.5 μM, 55.6 μM, and 167 μM) plotted as -log C vs cell viability. The error bars indicate the accuracy and reproducibility.