Figure 8: Agarose gel electrophoresis of RT-PCR assay to detect the expression of estrogen-degrading enzymes. M: marker; lanes 1–3: RT-PCR amplification products of (1) catechol 1,2-dioxygenase, (2) dioxygenase, and (3) 7α-hydroxysteroid dehydrogenase. CK: control group.