Chorionic GonadotropinPregnancy, EctopicChorionic Gonadotropin, beta Subunit, HumanPregnancyGonadotropinsReceptors, LHChoriocarcinomaGlycoprotein Hormones, alpha SubunitGonadotropins, EquineReceptors, GonadotropinLuteinizing HormoneTrophoblastic NeoplasmsFollicle Stimulating HormoneLeydig CellsOvulationProgesteroneOvaryPregnancy TestsTestosteroneGonadotropins, PituitaryHydatidiform MoleCorpus LuteumGonadotropin-Releasing HormoneUterine NeoplasmsGranulosa CellsReproductive Control AgentsOvarian FollicleEstriolGestational Trophoblastic Diseasealpha-FetoproteinsHormones, EctopicOvulation InductionEstradiolTestisPregnancy Trimester, FirstPlacentaTrophoblastsReceptors, FSHTesticular NeoplasmsPregnancy Tests, ImmunologicSuperovulationPregnancy-Associated Plasma Protein-ALuteinizationInsemination, ArtificialPlacental LactogenFertility Agents, FemalePituitary GlandMenotropinsLeydig Cell TumorImmunoassayHypogonadismRadioimmunoassayFluoroimmunoassaySerumTheca CellsFertilization in VitroEstrusHypophysectomySteroidsNeoplasms, Germ Cell and EmbryonalDown SyndromePregnancy Trimester, SecondInhibinsImmunoradiometric AssayAbortifacient Agents, NonsteroidalProlactinLuteal CellsCorpus Luteum MaintenanceHorsesGerminomaPeptide FragmentsRNA, MessengerSexual MaturationSeminoma3-Hydroxysteroid DehydrogenasesCyclic AMPPrenatal Diagnosis8-Bromo Cyclic Adenosine MonophosphateBucladesinePituitary Hormones, AnteriorAndrostenedioneEmbryo ImplantationSwineOocytesCattlePregnancy RateHormone AntagonistsCells, CulturedLuteinizing Hormone, beta SubunitEstrus SynchronizationAbortion, SpontaneousHormonesLuteal PhaseHydatidiform Mole, InvasivePregnancy, TubalTime FactorsGlycosylationInfertility, FemaleThyrotropinCumulus Cells