Figure 6.

Induction of luciferase activity by BPA (A) and NP (B). The 21-d-old mice (as described in Fig. 5) were treated with BPA (250 mg/kg·d) or NP (250 mg/kg·d) for 72 h, and uterine luciferase activity was determined at different time points using the Berthold NightOwl imaging system as described in Materials and Methods. *, Significant (P < 0.05) induction. Results are expressed as means ± sd for at least four mice per treatment group. Time (h) is measured on the horizontal axis and relative activity represented on the vertical axis.