Fig. 6.

Dioxin-induced thymic involution is independent of AHR signaling in hepatocytes. Thymus weights from control and dioxin-treated Ahr^fx/fx and Ahr^fx/fxCre^Alb were measured. White bars, vehicle-treated animals; gray bars, dioxin-treated animals. The Ahr^fx/fxCre^Alb groups each contain eight animals, whereas the vehicle-treated Ahr^fx/fx group contains four animals, and the dioxin-treated Ahr^fx/fx group contains 12 animals. Error bars, SE. Those groups not sharing a superscript letter differ significantly at P ≤ 0.05.