AequorinScyphozoaLuminescent MeasurementsFerretsCalciumLuminescenceArachnidaLuminescent ProteinsCnidariaThoracicaPapillary MusclesReproducibility of ResultsCarnivoraApoproteinsLuminescent AgentsCaffeineBupranololMyocardial ContractionStrophanthidinFirefly LuciferinPyrazinesEgtazic AcidArsenazo IIIRyanodine