Method for Stabilizing Microparticles Having Reactive Substance Bound Thereto, and Reagent Containing the Microparticles
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United States of America Patent
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Issued Date -
May 19, 2011
app pub date -
Jun 19, 2009
filing date -
Jul 14, 2008
priority date (Note) -
Abandoned
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Abstract
Provided is a method for maintaining the reactivity of microparticles having a reactive substance bound thereto in a dispersion liquid of the microparticles over a long period of time by stabilizing the microparticles in the dispersion liquid. The method for stabilizing microparticles having a reactive substance bound thereto includes the step of allowing a sulfur-containing amino acid or a derivative thereof to coexist in a dispersion liquid of the microparticles. The sulfur-containing amino acid includes one or more of cysteine, cystine, and methionine. The method is particularly useful when a precipitation preventing substance, such as a polyanion, dextran, or the like, is allowed to coexist in the dispersion liquid.
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