Calcium SignalingCalciumCalcium ChannelsAequorinCalcium, DietaryArsenazo IIIFura-2XanthenesCalcium Channels, L-TypeEgtazic AcidFluorescent DyesAniline CompoundsMyocardial ContractionCalcium CarbonateCaffeineCells, CulturedMembrane PotentialsSarcoplasmic Reticulum Calcium-Transporting ATPasesMyocardiumTime FactorsMyocytes, CardiacRyanodineCalcium PhosphatesElectric StimulationCalcium IsotopesSarcoplasmic ReticulumCalcium ChloridePatch-Clamp TechniquesNaphthalenesulfonatesNeuronsElectrophysiologyHeterocyclic Compounds, 3-RingIschemic Attack, TransientKineticsChelating AgentsMusclesCytosolNifedipineHeartRats, Sprague-DawleyCalcium Channel AgonistsThapsigarginRyanodine Receptor Calcium Release ChannelBenzofuransIntracellular FluidDendritesMurexideCalcium OxalateMuscle ContractionCalcium GluconateCalcium-Binding ProteinsSodium-Calcium ExchangerIon TransportDantroleneTetrodotoxinRana pipiensRana temporariaDose-Response Relationship, DrugVoltage-Sensitive Dye ImagingCalcium RadioisotopesInositol 1,4,5-Trisphosphate ReceptorsMicroscopy, ConfocalCalcium Channel BlockersRabbitsPapillary MusclesFerretsMacrocyclic CompoundsAnimals, NewbornHeart VentriclesSignal TransductionRats, WistarInositol 1,4,5-TrisphosphateLanthanumSynapsesCalcium-Transporting ATPasesPotassiumMicroscopy, FluorescenceFertilizationCardiac ElectrophysiologyMagnesiumParvalbuminsRana esculentaSodiumBuffersIonomycinOptics and PhotonicsCalcium CompoundsCalcium Channels, N-TypeModels, BiologicalCell LineIonophoresPresynaptic TerminalsGuinea PigsNicardipineExcitation Contraction CouplingThoracicaHomeostasisAdenosine TriphosphateIndolesSpectrometry, Fluorescence