Figure 1From: DNA damage and cytotoxicity in type II lung epithelial (A549) cell cultures after exposure to diesel exhaust and urban street particlesCytotoxicity of A549 cells exposed to SRM2975 (solid bars), SRM1650 (hatched bars) and ASPM (open bars). The 100% maximum LDH release is obtained by treatment of cell cultures with Triton X-100, whereas the baseline LDH release in untreated cell cultures is 0%. Bars denote the mean ± SEM; (n = 3). * Statistically significant compared to control p < 0.05 (Kruskal-Wallis test). # Higher level of LDH release of SRM1650 compared to SRM2975 (p < 0.01, Mann-Whitney U test). ¤ Higher level of LDH release of SRM1650 compared to SRM2975 and ASPM (p < 0.05, Kruskal-Wallis test).Back to article page