Antitumor response using AhR^−/−T cells. (A) 2.5 × 10⁴ luciferase-expressing P815 cells were transferred along with 2.0 × 10⁶ WT or 4.0 × 10⁶ AhR^−/− T cells and 3.0 × 10⁶ TCD BM cells. Mice were monitored for tumor growth as indicated using an IVIS Kinetic System following luciferin injection. The “X” indicates death of mouse because of tumor growth; n = 5 for each group. (B) Kaplan-Meier survival for mice described in panel A.