CatecholaminesAdrenal MedullaChromaffin CellsChromaffin SystemAdrenal GlandsEpinephrineChromaffin GranulesNorepinephrineSplanchnic NervesDigitoninVeratridineChromogranin ACattleChromograninsExocytosisPheochromocytomaDimethylphenylpiperazinium IodideNicotineCalciumMuscarineOncorhynchus mykissPC12 CellsDopamine beta-HydroxylaseAdrenal Gland NeoplasmsSecretory RateCytophotometryNadololOncorhynchusHexamethonium CompoundsAcetylcholineReceptors, NicotinicEnterochromaffin CellsCells, CulturedPituitary Adenylate Cyclase-Activating PolypeptideSelenic AcidPerfusionTyrosine 3-MonooxygenaseHexamethonium1-Sarcosine-8-Isoleucine Angiotensin IICarbacholElectric StimulationPotassiumCalcium Channel BlockersReceptors, CatecholamineIndole AlkaloidsSodiumCell Membrane PermeabilityHistamineAnoxiaPilocarpineNicotinic AntagonistsVasoactive Intestinal PeptideDose-Response Relationship, DrugReceptors, MuscarinicCatsElectrochemistryBariumCalcium ChannelsKineticsProtein Kinase CPotassium ChlorideNeuropeptidesTime FactorsCaffeinePeptide FragmentsNormetanephrineOuabainColforsinVanilmandelic AcidDopamineTetrodotoxinMicroelectrodesRats, WistarGuinea PigsTetradecanoylphorbol AcetateIsoproterenolCarbazolesPropranololMembrane PotentialsReserpineRats, Sprague-DawleyBodily SecretionsAdenosine TriphosphateReceptors, AdrenergicMetanephrineElectrophysiologyInsulinIntestinal SecretionsBacterial Secretion SystemsAngiotensin IIPhentolamineAnalysis of VariancePhenylethanolamine N-MethyltransferaseEnzyme InhibitorsDihydroxyphenylalanineCatecholamine Plasma Membrane Transport ProteinsRyanodineMethyltyrosinesalpha-MethyltyrosineNG-Nitroarginine Methyl Ester