Fluorescent labels comprise a polysaccharide bound to a polymeric particle which contains a fluorescent rare earth chelate. These labels can be attached to any of a variety of physiologically reactive species to provide labeled species which have improved stability in aqueous solutions. The labeled species are particularly useful in specific binding assays to determine an immunologically reactive ligand, e.g. a hapten, in either solution or dry analytical techniques.
荧光标签由与含有荧光稀土螯合物的聚合物颗粒结合的
多糖组成。 这些标签可附着在各种生理活性物质上,以提供在
水溶液中稳定性更好的标记物质。 标记物质特别适用于特异性结合测定,以确定溶液或干分析技术中的免疫活性
配体(如合体)。