OxytocinNeurotransmitter AgentsHormonesThyroid HormonesFollicle Stimulating HormoneOxytocicsVasotocinLuteinizing HormoneNeurotransmitter Transport ProteinsParathyroid HormoneGonadotropin-Releasing HormoneGonadal Steroid HormonesVasopressinsReceptors, NeurotransmitterPlasma Membrane Neurotransmitter Transport ProteinsMilk EjectionAdrenocorticotropic HormoneNeuronsSupraoptic NucleusPituitary Gland, PosteriorReceptors, Thyroid HormoneNeurophysinsHuman Growth HormoneSynaptic TransmissionSynaptic VesiclesProgesteronePituitary HormonesGlutamic AcidPregnancyUterine ContractionDinoprostMyometriumgamma-Aminobutyric AcidHypothalamusEstradiolPresynaptic TerminalsRats, Sprague-DawleyLabor, ObstetricBrainCalciumSynapsesHormone AntagonistsCorticotropin-Releasing HormoneTriiodothyronineUterusSerotoninPituitary GlandOrnipressinParaventricular Hypothalamic NucleusJuvenile HormonesDopamineProlactinNerve Tissue ProteinsHormone Replacement TherapyEstrusRadioimmunoassayDose-Response Relationship, DrugTime FactorsLactationExocytosisRNA, MessengerRats, WistarGrowth Hormone-Releasing HormoneMolecular Sequence DataSheepCells, CulturedHypothalamic HormonesSynapsinsNeuropeptidesNorepinephrineCorpus LuteumTestosteroneOvariectomyNeurosecretory SystemsPeptide HormonesThyroxineNeuromuscular JunctionGABA Plasma Membrane Transport ProteinsSynaptotagmin IElectric StimulationAnti-Mullerian HormoneGonadal HormonesAcetylcholineThyroid Hormone Receptors betaAmino Acid SequencePregnancy, AnimalCattleGastrointestinal HormonesHydrocortisoneLabor, InducedPituitary Hormones, AnteriorThyrotropinPatch-Clamp TechniquesHippocampusHypothalamo-Hypophyseal SystemImmunohistochemistryEstrogensElectrophysiologyRats, Inbred StrainsKinetics