Fluorescent DyesSubcellular FractionsCalciumArsenazo IIIFura-2Membrane PotentialsMicroscopy, FluorescenceMicroscopyMicroscopy, ElectronBenzofuransColoring AgentsMicroscopy, Electron, ScanningXanthenesMicroscopy, ConfocalCalcium SignalingElectrophysiologyKineticsAction PotentialsNeuronsCells, CulturedHydrogen-Ion ConcentrationSodiumChloridesMicroscopy, Atomic ForceMicroscopy, ImmunoelectronMicroscopy, Electron, TransmissionElectric StimulationTime FactorsSpectrometry, FluorescenceRats, Sprague-DawleyIon Channel GatingCell MembranePatch-Clamp TechniquesElectric ConductivityMolecular Sequence DataMicroscopy, Fluorescence, MultiphotonCytoplasmIon ChannelsAmino Acid SequenceHair DyesCell NucleusCryoelectron MicroscopyProtein TransportCell LineCell FractionationPotassium ChannelsCell CompartmentationMicroscopy, Scanning TunnelingMicroscopy, VideoPotassiumOocytesGreen Fluorescent ProteinsModels, BiologicalXenopus laevisRosaniline DyesFluorescent Antibody TechniqueMicroscopy, PolarizationMicroscopy, InterferenceOrganellesLuminescent ProteinsCalcium ChannelsRecombinant Fusion ProteinsMicroscopy, Phase-ContrastProtein Structure, TertiaryStaining and LabelingImmunohistochemistryRabbitsBiological TransportCytosolMutationMicroscopy, Electron, Scanning TransmissionProtein BindingVoltage-Sensitive Dye ImagingMembrane ProteinsPotassium Channels, Voltage-GatedElectricityGolgi ApparatusEndoplasmic ReticulumIntracellular SpaceXenopusTransfectionShaker Superfamily of Potassium ChannelsIntracellular MembranesMicroscopy, Scanning ProbeBariumCarbocyaninesPyridinium CompoundsBlotting, WesternGuinea PigsTetrodotoxinHeLa CellsTetraethylammoniumBiophysicsProteinsCell Membrane PermeabilityRhodaminesMyocardiumRecombinant ProteinsCesiumCOS Cells