MifepristoneAbortifacient Agents, SteroidalHormone AntagonistsMisoprostolAbortifacient Agents, NonsteroidalContraceptives, Postcoital, SyntheticAbortifacient AgentsAbortion, InducedContraceptives, Oral, SyntheticMenstruation-Inducing AgentsEstradiolProgestinsLuteal PhaseEndometriumLuteolytic AgentsPregnancyNorpregnadienesAdministration, IntravaginalProgesterone CongenersGonanesCorpus LuteumLevonorgestrelMenstrual CycleReceptors, GlucocorticoidMenstruationUterusLuteinizing HormoneContraceptive Agents, FemaleEstrusOvulationProgesteroneUterine HemorrhageContraceptives, PostcoitalPregnanediolOvaryContraception, PostcoitalEmbryo ImplantationReceptors, EstrogenOvariectomyPseudopregnancyCytostatic AgentsPregnancy, AnimalEstrogensChorionic GonadotropinFollicular PhaseDanazolLabor Stage, FirstFollicle Stimulating HormoneFallopian TubesPregnancy Trimester, FirstReceptors, ProgesteroneMegestrolDeciduaOvulation InhibitionNorgestrelDinoprostHydroxyprogesteronesLuteal CellsEstrenesMetrorrhagiaAdministration, SublingualProlactinOxytocicsPessariesLeiomyomaAlgestoneGranulosa Cells20-alpha-DihydroprogesteroneCorticosteroneDexamethasoneAlcohol-Induced Disorders, Nervous SystemVacuum CurettageGonadal Steroid HormonesOvarian FollicleImmunohistochemistryTranscortinOviductsUterine NeoplasmsSteroidsEthinyl EstradiolContraceptives, Postcoital, HormonalRNA, MessengerGlucocorticoidsEstrous CycleSheepTime FactorsMenorrhagiaDose-Response Relationship, DrugLuteolysisCastrationPregnenoloneReceptors, MineralocorticoidBreast Neoplasms20-Hydroxysteroid DehydrogenasesAbortion, LegalNorandrostanesMyometriumOxytocin3-Hydroxysteroid DehydrogenasesClostridium sordellii