Gallic acid induced apoptotic events in HCT-15 colon cancer cells

Figure 6 Gallic acid induced reactive oxygen species generation. HCT-15 cells were cultured in the presence or absence of gallic acid (GA) for the specified time points. DCFH-DA fluorescence intensity was detected by using flow cytometry. Data represented is the maximum of three independent experiments. Mean differences are significant at 24 h, 48 h and 72 h compared with untreated control cells (P < 0.05 vs untreated control cells).