Administration, IntravaginalVaginal Creams, Foams, and JelliesDydrogesteroneLuteal PhaseProgesteroneEstrogens, Conjugated (USP)ProgestinsDiosminEstradiolVaginaPowdersFenofibrateVaginal DouchingDosage FormsEstrus SynchronizationLubricantsEstrusPregnancyHesperidinContraceptive Devices, FemaleProgesterone CongenersCorpus LuteumVaginal DiseasesSpermatocidal AgentsInsemination, ArtificialChemistry, PharmaceuticalTabletsDiphosphatesMedroxyprogesterone AcetateLuteinizing HormoneFlurogestone AcetateOvulationMifepristoneDinoprostOvariectomyHypolipidemic AgentsUterusAnestrusOvaryVaginitisMucous MembraneCelluloseEstrogen Replacement TherapyEndometriumDouble-Blind MethodAdministration, OralOvarian FollicleCattleDrug CompoundingBiological AvailabilityPessariesCandidiasis, VulvovaginalVaginosis, BacterialSheepPregnancy, AnimalDrug ImplantsParticle SizeAnemia, Iron-DeficiencyOviductsLuteolysisReceptors, EstrogenGenitalia, FemalePlacebosFollicle Stimulating HormoneCervix MucusPostmenopauseHormone Replacement TherapyTime FactorsHormone AntagonistsFertilityHerpes GenitalisLactoseGonadotropins, EquineHerpesvirus 2, HumanNonoxynolEstrogensMenstrual CyclePremature EjaculationPostpartum PeriodGelsHydroxyprogesteronesDrug CarriersGonadotropin-Releasing HormoneLuteal CellsPseudopregnancyIntrauterine Devices, MedicatedChorionic GonadotropinReproductive Tract InfectionsAbortifacient AgentsGonanesGranulosa CellsDelayed-Action Preparations20-alpha-DihydroprogesteroneMisoprostolChlamydia muridarumHygieneCervix UteriContraceptive Agents, FemaleMelengestrol AcetatePregnancy Rate