EstrogensEstroneEstradiolSex Hormone-Binding GlobulinReceptors, EstrogenAndrogensPostmenopauseEstrogen Receptor alphaTestosteroneEstrogen Receptor betaProgesteroneBreast NeoplasmsEstrogens, Conjugated (USP)OvariectomySerumProgestinsUterusProgesterone CongenersCorpus LuteumMifepristonePregnancyEstrusLuteinizing HormoneEstrogens, CatecholOvaryEndometriumLuteal PhaseSelective Estrogen Receptor ModulatorsSerum AlbuminPregnancy, AnimalOvulationMenstrual CycleEstrogens, Non-SteroidalTamoxifenGonadal Steroid HormonesHormone AntagonistsFollicle Stimulating HormoneCastrationDiethylstilbestrolChorionic GonadotropinAromataseDinoprostRadioimmunoassayOviductsHydroxyprogesteronesEstrous CycleRNA, MessengerPseudopregnancyProlactinSteroidsGranulosa CellsEstradiol CongenersLuteal CellsOvarian FollicleTime FactorsSheepGonanesCattle20-alpha-DihydroprogesteroneImmunohistochemistryMedroxyprogesterone AcetateNorpregnadienesAndrostenedioneFollicular PhaseMyometriumCells, CulturedMedroxyprogesteroneDose-Response Relationship, DrugSerum Albumin, BovineGonadotropin-Releasing HormoneReceptors, ProgesteroneLuteolysis3-Hydroxysteroid DehydrogenasesReceptors, EstradiolOxytocinAdministration, IntravaginalPregnenolone20-Hydroxysteroid DehydrogenasesMenstruationDiestrusHormonesDrug ImplantsEthinyl EstradiolRats, Sprague-DawleyEmbryo ImplantationGene Expression Regulation5-alpha-DihydroprogesteroneProestrusReverse Transcriptase Polymerase Chain ReactionNeoplasms, Hormone-DependentProgesterone ReductaseDydrogesteroneDihydrotestosteronePregnancy MaintenanceMenopauseProgesterone-Binding GlobulinSexual MaturationPregnanolonePregnanediolBiological Markers