Estrogens, CatecholCatecholsCatechol O-MethyltransferaseHydroxyestronesEstrogensCatechol 2,3-DioxygenaseCatechol 1,2-DioxygenaseEquileninHydroxyl RadicalHexestrolDienestrolEstradiolReceptors, EstrogenQuinonesDNA AdductsDioxygenasesEstrogen Receptor alphaMesocricetusOxygenasesCytochrome P-450 CYP1A1HydroxylationEstrogen Receptor betaAryl Hydrocarbon HydroxylasesCatechol OxidaseMethylationOxidation-ReductionPhenolHydroxybenzoatesEstrogens, Conjugated (USP)Breast Neoplasms