ExocytosisSecretory VesiclesChromaffin CellsCytoplasmic GranulesSynaptotagminsSNARE ProteinsCalciumElectric CapacitanceSynaptic VesiclesVesicular Transport ProteinsSynaptosomal-Associated Protein 25Weibel-Palade Bodiesrab3A GTP-Binding ProteinQa-SNARE ProteinsR-SNARE ProteinsMembrane FusionSyntaxin 1Acrosomerab3 GTP-Binding ProteinsSynaptotagmin IPC12 CellsCell MembraneMunc18 ProteinsPyridinium CompoundsVesicle-Associated Membrane Protein 2Nerve Tissue ProteinsEndocytosisrab GTP-Binding ProteinsTetanus ToxinAcrosome ReactionAdrenal MedullaMembrane ProteinsCells, CulturedChromaffin GranulesSpider VenomsTransport VesiclesIslets of LangerhansN-Ethylmaleimide-Sensitive ProteinsQc-SNARE ProteinsQb-SNARE ProteinsBotulinum ToxinsSynaptotagmin IICalcium-Binding ProteinsParameciumPresynaptic TerminalsCalcium SignalingCatecholaminesNeurotransmitter AgentsQuaternary Ammonium CompoundsGoldfishIonophoresCytoplasmic VesiclesVesicle-Associated Membrane Protein 3Cell Membrane PermeabilityPatch-Clamp TechniquesSoluble N-Ethylmaleimide-Sensitive Factor Attachment ProteinsCattleKineticsChromaffin SystemInsulinMicroscopy, FluorescenceStreptolysinsGuanosine 5'-O-(3-Thiotriphosphate)Mast CellsProtein TransportGTP-Binding ProteinsEgtazic AcidCalcium ChannelsMicroscopy, ConfocalOvumLysosomesSpermatozoaCalcimycinMembrane PotentialsMicroscopy, ElectronFluorescent DyesParamecium tetraureliaGreen Fluorescent ProteinsAdenosine TriphosphateNeuroendocrine CellsInsulin-Secreting CellsSynaptic MembranesSea UrchinsCarrier ProteinsActinsModels, BiologicalIonomycinSynaptic TransmissionRecombinant Fusion ProteinsFertilizationDynaminsNeuronsZona PellucidaProtein Kinase CSynapses