Chorionic GonadotropinChorionic Gonadotropin, beta Subunit, HumanGonadotropinsReceptors, LHGonadotropins, EquineReceptors, GonadotropinChoriocarcinomaGlycoprotein Hormones, alpha SubunitLuteinizing HormoneGonadotropins, PituitaryFollicle Stimulating HormoneSensitivity and SpecificityPregnancyOvulationOvaryProgesteroneGonadotropin-Releasing HormoneLeydig CellsTrophoblastic NeoplasmsTestosteroneSubstrate SpecificityPregnancy TestsOvarian FollicleCorpus LuteumGranulosa CellsHydatidiform MoleEstradiolPregnancy-Associated Plasma Protein-APregnancy Trimester, FirstPregnancy, EctopicOvulation InductionTestisReceptors, FSHPituitary GlandUterine NeoplasmsReproductive Control AgentsEstriolHormones, EctopicPlacentaalpha-FetoproteinsGestational Trophoblastic DiseaseMolecular Sequence DataSuperovulationLuteinizing Hormone, beta SubunitTrophoblastsPlacental LactogenHypogonadismFertility Agents, FemaleHorsesMenotropinsFollicle Stimulating Hormone, beta SubunitInsemination, ArtificialNuchal Translucency MeasurementLuteinizationTesticular NeoplasmsEstrusInhibinsAmino Acid SequenceDown SyndromeRadioimmunoassaySexual MaturationImmunoassayTheca CellsFertilization in VitroPregnancy Tests, ImmunologicSteroidsFluoroimmunoassayLeydig Cell TumorRNA, MessengerProlactinHypophysectomyAbortifacient Agents, NonsteroidalAntibody SpecificityKineticsPeptide FragmentsPrenatal DiagnosisPerissodactylaPregnancy Trimester, SecondBase SequenceCattleLeuprolideOocytesCyclic AMPNeoplasms, Germ Cell and EmbryonalSwine3-Hydroxysteroid DehydrogenasesAndrostenedioneLuteal CellsPituitary Hormone-Releasing HormonesEmbryo ImplantationSpecies SpecificityGerminomaImmunoradiometric AssayCells, CulturedFollicular PhaseBiological AssayPregnancy RateHormone AntagonistsPregnancy, Tubal8-Bromo Cyclic Adenosine Monophosphate