It has been demonstrated that, in breast cancer cell lines MCF-7 and MDA-MB-231 under the influence of organophosphate pesticide chlorpyrifos (CPF) and due to the action of AhR, cell proliferation is induced and the Wnt/β-catenin signaling pathway is launched, partially via the PGE2 pathway [126]. Here, AHR is linked to breast carcinoma.