Marker, immunoassay method, immunoassay reagent, method for assaying analyte, analyte measurement kit, and lateral-flow chromatographic test strip
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United States of America Patent
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Jun 23, 2020
Grant Date -
Jun 15, 2017
app pub date -
Jun 30, 2015
filing date -
Jul 1, 2014
priority date (Note) -
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Abstract
A resin-metal composite 100 to be used as a marker in an immunoassay, said resin-metal composite 100 comprising a resin particle 10 and metal particles 20 and having the following constitution (A) or constitution (B): (A) the average particle size of the resin-metal composite exceeding 300 nm; or (B) the average particle size of the metal particles being in the range of more than 20 nm and less than 70 nm. It is preferred that a part of the metal particles 20 are two- or three-dimensionally distributed in the surface layer part 60 of the resin particle 10, a part of the three-dimensionally distributed metal particles 20 are partly exposed to the outside of the resin particle 10, and a part of the remainder particles are enclosed in the resin particle 10.
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