Receptors, GonadotropinReceptors, LHChorionic GonadotropinGonadotropinsReceptors, FSHHypothalamusLuteinizing HormoneChorionic Gonadotropin, beta Subunit, HumanFollicle Stimulating HormoneThecomaGonadotropins, PituitaryOvaryGonadotropins, EquineLeydig CellsOvarian FollicleReceptors, ThyrotropinGonadotropin-Releasing HormoneGranulosa CellsLeydig Cell TumorTestosteroneProgesteroneEstradiolTestisReceptors, Cell SurfaceHypothalamus, AnteriorHypothalamus, MiddlePituitary GlandCorpus LuteumOvulationGlycoprotein Hormones, alpha SubunitRNA, MessengerCyclic AMPFollicle Stimulating Hormone, beta SubunitSwineLuteinizing Hormone, beta SubunitCattlePregnancyHormone AntagonistsMolecular Sequence DataChoriocarcinomaHypogonadismPituitary Hormone-Releasing HormonesGene ExpressionHypothalamus, PosteriorRats, Sprague-DawleyReceptors, LHRHOvulation InductionSexual MaturationKineticsPituitary Gland, AnteriorAmino Acid SequenceGonadotrophsEstrusParaventricular Hypothalamic NucleusVentromedial Hypothalamic NucleusDose-Response Relationship, DrugPreoptic AreaProestrusInhibinsArcuate NucleusProlactinMedian EminenceCell LineHypothalamic HormonesOvariectomyMenotropinsSuperovulationFertility Agents, FemaleHypothalamic Area, LateralHypothalamo-Hypophyseal SystemRats, WistarRadioimmunoassayFollicular PhaseKisspeptinsLeuprolideNeuropeptidesCastrationRats, Inbred StrainsNeuronsTrophoblastic NeoplasmsPituitary HormonesExcitatory Amino Acid AntagonistsDopamine AntagonistsFertilization in VitroSteroidsPro-OpiomelanocortinNarcotic AntagonistsTime Factors