AHR and breast cancer: The results show that several AhR agonists, including TCDD, 3,31,4,41-tetrachlorobiphenyl (TCBP), diindolylmethane (DIM) and substituted DIM analogs, and 6-methyl-1,3,8-trichlorodibenzofuran (MCDF) inhibit the formation and growth of mammary tumors [46,47,48,49,50,51].