Figure 8

ROS analysis by flow cytometry in (a) A549 control cells and (b) A549 treated cells with OEO (1/2 IC50) for 24 h (c) A549 treated cells with OEO (IC50) for 24 h d) A549 treated cells with the Etoposide (positive control) (IC50). The x-axis shows log FL-1 fluorescence intensity; the y-axis indicates the cell number. The shift of the population to the right in treated cells compared to control cells indicates the apoptotic cell population.