Mean mRNA levels of CYP1A1 and CYP1B1 transcripts in human tumors.

<p>Box plots indicate mean ± STDEV for (A) bladder and (B) colon tumor and normal samples. Statistical analysis was conducted using paired T test and Wilcoxon ranks test. Statistical differences were obtained for bladder (n=20) and colon tumors (n=20) vs normals (p< 0.05 for CYP1A1 and CYP1B1).