“…AHR is an important signaling molecule for immune responses, notably for the balance between inflammatory and regulatory T cell response, and for differentiation programs of innate immune cells (Kiss et al, 2011;[ 17 ] Lee et al, 2011[ 20 ]; Nguyen et al, 2013[ 24 ]; Stockinger et al, 2014[ 34 ]). Both persistent and strong activation by non-degradable molecules such as TCDD and complete lack of AHR impairs important functions (Esser C, 2014[ 10 ]). By now, it is recognized that there is a healthy level for AHR activated by physiological ligands.…”