Estrous CycleOvarian FollicleEstrusFollicle Stimulating HormoneHair FollicleProgesteroneOvaryCorpus LuteumOvulationCell CycleEstradiolDiestrusLuteinizing HormoneProestrusUterusGranulosa CellsCattlePregnancy, AnimalDinoprostPregnancyFollicular FluidOvariectomyTheca CellsEndometriumLuteal PhaseSheepLuteolysisInhibinsMenstrual CycleEstrus SynchronizationGonadotropin-Releasing HormoneAnestrusRNA, MessengerFollicular PhaseChorionic GonadotropinSwineOocytesFertilityLuteal CellsGonadotropinsAndrostenedioneReproductionSexual MaturationTime FactorsOxytocinHairImmunohistochemistrySuperovulationFallopian TubesRadioimmunoassayGonadal Steroid HormonesPostpartum PeriodEstrus DetectionGonadotropins, EquineVaginaGenitalia, FemaleOvulation InductionReceptors, FSHEstrogensCell Cycle ProteinsPseudopregnancyOogenesisFollicular CystReceptors, LHProstaglandins FInsemination, ArtificialEmbryo ImplantationMyometriumIn Situ HybridizationFollicular AtresiaPregnenedionesHorsesFertilization in VitroProgesterone CongenersFollistatinPituitary GlandHormonesPituitary Gland, AnteriorReverse Transcriptase Polymerase Chain ReactionGene Expression3-Hydroxysteroid DehydrogenasesPregnancy ProteinsAromataseAnovulationSteroidsOrgan SizeRats, Sprague-DawleyTestosteroneFollicle Stimulating Hormone, HumanProlactinFollicle Stimulating Hormone, beta SubunitGonadotropins, PituitaryDrug ImplantsGene Expression RegulationInfertility, FemaleRandom AllocationAnti-Mullerian HormoneBuserelinCloprostenolMelengestrol Acetate