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 Cells