fig3

Figure 3. XMEs (CYP1A1, CYP1B1, CYP2E1, CYP2F1, CYP2S1, NQO1, and EPHX1) and AhR receptor in A549 cells exposed for 1 h to the emission of the catalytic degradation of toluene by Pd/αAl₂O₃ (A) and Pd/γAl₂O₃ (B) at 10% (100 ppm, light grey) or 100% (1000 ppm, dark grey). Gene induction was measured by RT-qPCR (n = 3) and analyzed by ∆∆Ct method^[39] using air-exposed cells as reference and 18S as a normalization gene. Data are shown as median RQ values vs. controls and interquartile range. Significant up- or down-expression was considered if RQ was > 2.0 or < 0.5, respectively.