Figure 6From: Role of the p53/p21 system in the response of human colon carcinoma cells to DoxorubicinEffect of 24 h pre-treatment with TPL on DOX IC50 values obtained in HCT116, HT29, HCT116 E6 and HCT116 p21-/- cells following 1 h exposure to DOX and 72 h in drug-free medium. For each cell line, two TPL concentrations corresponding to IC25 and IC50 (see table 2), were used. Mean ± s.e.m. of 4–6 experiments.Back to article page