Fig. 6From: Molecular mechanism of cardol, isolated from Trigona incisa stingless bee propolis, induced apoptosis in the SW620 human colorectal cancer cell lineEffect of cardol at 0 μg/mL (Control), 8 μg/mL (Low) and 14 μg/mL (High) on intracellular ROS production, as determined by the DHE assay. Data are expressed as the mean ± SE, derived from three independent repeats. Compared to the control, ** represent a significant difference at the p < 0.01Back to article page