Chromaffin CellsChromaffin SystemChromaffin GranulesAdrenal MedullaCatecholaminesAdrenal GlandsExocytosisCattleChromograninsPhenylethanolamine N-MethyltransferaseChromogranin ADopamine beta-HydroxylaseVeratridineCalciumDigitoninSecretory VesiclesCells, CulturedDimethylphenylpiperazinium IodideNicotineMuscarineTyrosine 3-MonooxygenasePara-Aortic BodiesEnterochromaffin CellsNorepinephrineEpinephrineEnkephalin, MethionineElectric CapacitanceReceptors, NicotinicBariumPC12 CellsCalcium ChannelsMembrane PotentialsPheochromocytomaEnkephalinsSynaptosomal-Associated Protein 25KineticsSplanchnic NervesCytoplasmic GranulesChromogranin BPotassiumProteidaePituitary Adenylate Cyclase-Activating PolypeptidePatch-Clamp TechniquesNicotinic AntagonistsCell Membrane PermeabilityNeuropeptidesAcetylcholineAdrenal Gland NeoplasmsAnnexin A7ReserpineElectrochemistryNerve Tissue ProteinsFlunarizineCalcium Channel BlockersTetrabenazineCell MembraneFura-2NeurosecretionCalcium RadioisotopesMembrane FusionElectrophysiologyWasp VenomsTetanus ToxinCytosolIntracellular MembranesAmbystomatidaeHexamethonium CompoundsR-SNARE ProteinsSynaptotagmin IAdrenal CortexEgtazic AcidAdenosine TriphosphateGanglia, SympatheticVesicular Transport ProteinsMicroscopy, ElectronInterrenal GlandBotulinum Toxinsrab3 GTP-Binding ProteinsCalcium SignalingIntracellular FluidMunc18 ProteinsProtein Kinase CHistamineSynaptotagminsSpider VenomsHexamethoniumNicotinic AgonistsNerve Growth FactorsElectric ConductivityNeurosecretory SystemsCalcium Channels, Q-TypeLarge-Conductance Calcium-Activated Potassium ChannelsNisoldipineNeurotransmitter Agentsrab3A GTP-Binding ProteinCaffeineParasympathomimeticsCytoplasmic VesiclesAnnexinsElectric Stimulation