OxytocinNeurotransmitter AgentsOxytocicsVasotocinNeurotransmitter Transport ProteinsVasopressinsPlasma Membrane Neurotransmitter Transport ProteinsReceptors, NeurotransmitterMilk EjectionSupraoptic NucleusNeuronsSynaptic TransmissionSynaptic VesiclesNeurophysinsPituitary Gland, PosteriorGlutamic AcidUterine Contractiongamma-Aminobutyric AcidMyometriumPresynaptic TerminalsDinoprostLabor, ObstetricSynapsesOrnipressinSerotoninBrainPregnancyDopamineRats, Sprague-DawleyParaventricular Hypothalamic NucleusNerve Tissue ProteinsUterusHypothalamusCalciumExocytosisSynapsinsProgesteroneGABA Plasma Membrane Transport ProteinsSynaptotagmin INeuromuscular JunctionElectric StimulationLactationAcetylcholineLabor, InducedNorepinephrineEstrusRats, WistarPatch-Clamp TechniquesSynaptosomal-Associated Protein 25HippocampusSynaptosomesExcitatory Postsynaptic PotentialsSynaptotagminsCorpus LuteumElectrophysiologyDose-Response Relationship, DrugNeuropeptidesNeurosecretionLuteolysisCholine O-AcetyltransferaseMaternal BehaviorSocial BehaviorPregnancy, AnimalSheepPair BondReceptors, GABACells, CulturedReceptors, GlutamateBrain ChemistryTime FactorsAction PotentialsNeurotransmitter Uptake InhibitorsSNARE ProteinsVesicular Glutamate Transport ProteinsTocolytic AgentsGlycineBehavior, AnimalNeurosecretory SystemsMicrodialysisHormone AntagonistsAnimals, NewbornSpider VenomsLypressinMembrane PotentialsEndometriumCalcium Channels, N-TypePostpartum HemorrhageNerve EndingsVesicular Neurotransmitter Transport ProteinsMolecular Sequence DataReceptors, GABA-AProstaglandins FNeuronal PlasticityExcitatory Amino Acid AntagonistsImmunohistochemistryRadioimmunoassayR-SNARE ProteinsNeural InhibitionCalcium ChannelsSyntaxin 1