Figure 2.

Effect of C. campestris on intracellular reactive oxygen species (ROS) in leukemic cells. NB4 and HL60 cells were treated with different concentrations of C. campestris (12.5-200 µg/ml) or As₂O₃ (50 µM) for 2 hr. Data are expressed as the mean ± SEM of three separate experiments. ^*p<0.05 as compared to control value