EuropiumBarium SulfateBariumFluoroimmunoassayLuminescenceMetals, Rare EarthSamariumBarium CompoundsLuminescent AgentsTerbiumYtterbiumLanthanoid Series ElementsStreptavidinEnemaPhenanthrolinesStearatesAmmonium HydroxideFluorometryEbstein AnomalyChelating AgentsOrganometallic CompoundsCoordination ComplexesHeterocyclic Compounds, 1-RingThenoyltrifluoroacetone