We previouslyshowed that CPF mediated this effect through AhR and Wnt/β-cateninsignaling pathway activation.4 In addition,PGE2 was reported to induce cell proliferation in MCF-7 and MDA-MB-231breast cancer cells.19 HSP90 and HSP70overexpression was reported to induce cell proliferation in MCF-7and MDA-MB-231 cells.10−12 Therefore, these data support our results. Here, AHR is linked to cancer.