Fig. 3.

Exposure to xenobiotic stress increased CYP1A1 activity. (A) Pancreatic cells were incubated with indicated concentration of TCDD and BaP for 24 hr then EROD activity was measured as described in materials and methods. (B) HPDE6-C7 cells exposed to TCDD and BaP for 24 hr were harvested and protein levels were measured with standard Western blotting using anti-CYP1A1 and anti-AhR antibodies. β-Actin was used as a loading and transfer control.