Fig. 7From: Endothelial responses of the alveolar barrier in vitro in a dose-controlled exposure to diesel exhaust particulate matterDifferential gene expression profile of CYP1A1 in endothelial cells at different incubation time after DEPM exposure of the tetraculture system. The endothelial cells of the tetraculture showed a significant increase for CYP1A1 mRNA 6 h after the indirect exposure to 80 ng/cm2 of DEPM (a). No significant change was observed for cells exposed to 240 ng/cm2 of DEPM (b). Results were normalized to untreated control cells (dotted line). Data represents the mean of four independent experiments ± SEM. Asterisks indicate significant differences compared to untreated control cells (P < 0.05)Back to article page