Figure 2: The effects of E. cava extract on viability of and lipid peroxidation in HaCaT keratinocytes exposed to PM10. In (a), the cells were treated with E. cava extract at the indicated concentrations for 48 h. In (b) and (c), the cells were exposed to PM10 (100 μg mL−1) for 48 h in the absence and presence of E. cava extract at the indicated concentrations. The cell viability (a, b) and cellular lipid peroxidation (c) were determined. The data are presented as the percentage of the control value (mean ± SE, ). < 0.05 versus control and < 0.05 versus PM10 control.