Figure 3From: Role of the p53/p21 system in the response of human colon carcinoma cells to Doxorubicinp53 (A) and p21 (C) protein levels in HCT116, HT29, HCT116 E6 and HCT116 p21-/- cells following 1 h exposure to DOX and 23 h incubation in drug-free medium. Panels B and D: densitometric analysis of p53 and p21-immune reactive bands, respectively (white bars: untreated; light grey bars: DOX 1 μM; dark grey bars: DOX 10 μM).Back to article page