Figure 4. Endogenous gene CYP1A1 expression in mouse hepatoma cells.

Hepa1c1c7 cells were incubated with DMSO (1%, final concentration), TCDD (1 nM), or ginsenosides (10 µM) for 4 h at 37°C, mRNA was extracted, subjected to RT-PCR and amplification. The asterisk indicated that the gene expression was significantly induced compared to DMSO-treated sample at p<0.05 (*).