Figure 4.
LC50 of everolimus in cells surviving multiple exposure to 1.5 × LC50 concentrations of everolimus. Cells were exposed to the specified concentration of everolimus for total of five exposures. The LC50 of drug in corresponding surviving cell populations was calculated similarly to naïve cells, and the values are summarized in the corresponding table. We were unable to collect survivors after the third exposure of MDA-MB-468 cells, and after second exposure of AU565 cells to everolimus at these concentrations.