Moreover, and in contrast to that observed when AhR was activated by exogenous ligands (Figures 5A,C), the frequency of CD8+ total and T. cruzi-specific T cells with EM phenotype was higher in AhRd than WT mice at 17 days pi (Figure 6A) and during the chronic phase of the infection (day 170 pi) (not shown). This evidence concerns the gene AHR and infection.