Estrous CycleEstrusLeukemia Virus, FelineImmunodeficiency Virus, FelineFeline Acquired Immunodeficiency SyndromeProgesteroneCatsCat DiseasesCalicivirus, FelineCoronavirus, FelineCell CycleCorpus LuteumDiestrusProestrusOvaryFeline PanleukopeniaEstradiolSarcoma Viruses, FelineUterusPregnancy, AnimalOvulationFeline Infectious PeritonitisLuteinizing HormoneDinoprostFeline panleukopenia virusOvarian FolliclePregnancyEndometriumCattleOvariectomyLeukemia, FelineLuteolysisFollicle Stimulating HormoneLuteal PhaseSheepMenstrual CycleFollicular PhaseEstrus SynchronizationAnestrusOxytocinLuteal CellsRNA, MessengerGonadotropin-Releasing HormoneLentivirus InfectionsSwineReproductionFallopian TubesTime FactorsInhibinsVaginaRadioimmunoassayGenitalia, FemaleCell Cycle ProteinsEstrus DetectionPseudopregnancyImmunohistochemistryFertilityMyometriumSexual MaturationFollicular AtresiaPostpartum PeriodEstrogensEmbryo ImplantationProstaglandins FPregnancy ProteinsMolecular Sequence DataGonadal Steroid HormonesFollicular FluidPituitary Gland, AnteriorSuperovulationGonadotropinsPregnenedionesInsemination, ArtificialFelidaeLentiviruses, FelineGranulosa CellsPituitary GlandPumaDrug ImplantsRandom AllocationLionsGene Expression5-alpha-DihydroprogesteroneRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionCitric Acid CycleCorpus Luteum MaintenanceProgesterone CongenersProlactinMelengestrol AcetateTheca CellsHorsesIn Situ HybridizationGene Expression RegulationChorionic GonadotropinHormonesOrgan SizeBase Sequence20-alpha-Hydroxysteroid DehydrogenaseCell Line