Fig. 2

Interaction index plots of 5-FU and Olaparib in HCT116 and HT29 cells. Cells were treated with 5-FU and/or Olaparib for 48 h or 72 h, and then cell viability was measured using MTT assay. Interaction index plots were computed with the median-effect equation. The data of interaction plots are shown as the mean of all experiments (n = 3)