It is unclear whether the infection-induced perturbations to the gut microbiota that occur during toxoplasmosis influence AHR activity [13, 24], but T. gondii can also produce the AHR agonist lipoxin A4 [44, 45], and the AHR has been implicated in the direct sensing of pathogen-associated molecular patterns [46]. Here, AHR is linked to toxoplasmosis.