Figure 3From: Cellular response to 5-fluorouracil (5-FU) in 5-FU-resistant colon cancer cell lines during treatment and recoveryApoptotic fractions during recovery periods following drug removal: apoptosis induction in 5-FU-treated HCT116 cell lines during the respective recovery periods for each cell line. The dashed line shows the levels of natural (spontaneous) apoptosis in untreated control cells.Back to article page