EstrogensEstradiolEstrogens, Conjugated (USP)DiethylstilbestrolEthinyl EstradiolAdministration, CutaneousOvariectomyEstrogen Replacement TherapyPostmenopauseUterusReceptors, EstrogenEstrogen Receptor alphaEstrogen Receptor betaAdministration, OralEstrogens, CatecholSelective Estrogen Receptor ModulatorsEstrogens, Non-SteroidalBreast NeoplasmsDose-Response Relationship, DrugRats, Sprague-DawleyTamoxifenDrug Administration ScheduleTime FactorsEstradiol CongenersInjections, IntravenousUnited States Food and Drug AdministrationAromataseReceptors, ProgesteroneDrug Administration RoutesRats, WistarEstroneProgesteroneRNA, MessengerDisease Models, AnimalMice, Inbred C57BLAdministration, IntranasalLiverInjections, IntraperitonealProgestinsImmunohistochemistryInjections, SubcutaneousTestosteronePhytoestrogensCell Line, TumorDrug InteractionsCastrationPregnancyOrgan SizeBiological AvailabilityAdministration, RectalNeoplasms, Hormone-DependentRats, Inbred StrainsSignal Transduction