Figure 2. Mean fold changes in qPCR assays. Relative expression ratios showing relative changes in unexposed compared with TCDD-exposed mouse molars after normalization to actin-β (= 1). Up-regulation is seen for CYP1b1 (3.42 ± 1.7), Fst (3.35 ± 2.2), and Runx2 (1.96 ± 1.0), and p21 (0.70 ± 0.1) and TGFβ1 (0.58 ± 0.2) are down-regulated. Each column consists of 9 datapoints for each gene. Results are mean ± SD of triplicate analyses.