Figure 1: The effects of PM10 on viability of and lipid peroxidation in cultured HaCaT keratinocytes. The cells were treated with PM10 at the indicated concentrations for 48 h, followed by the determination of the cell viability (a) and cellular lipid peroxidation (b). The data are presented as a percentage of the control values (mean ± SE, ). < 0.05 versus control.