Figure 3From: Aryl hydrocarbon receptor-dependent upregulation of Cyp1b1 by TCDD and diesel exhaust particles in rat brain microvesselsEffect of TCDD on Cyp1a1 and Cyp1b1 mRNA levels in isolated rat brain microvessels. (A) Freshly isolated rat brain microvessels from naïve rats were incubated ex vivo for 3 h with 25 nM TCDD (n = 4 rats per group). (B) Rats were dosed with a single i.p. dose of 25 μg/kg TCDD and brain microvessels were isolated at 72 h (n = 8 rats per group). Data are shown as relative expression of Cyp1a1 or Cyp1b1 mRNA in treated and control rats using q-PCR. Results are expressed as means ± SD ***p < 0.001 (Student's t-test).Back to article page