POLYMER MICROPARTICLES PROVIDED WITH MICROPHASE SEPARATION STRUCTURE GRAINS, REAGENT FOR PARTICLE IMMUNOASSAY USING SAME, AND PARTICLE IMMUNOASSAY METHOD

摘要

A polymer fine particle including a block copolymer having two or more segments, wherein the polymer fine particle has a microphase separated structure on a surface thereof, the number-average particle size is 50 nm to 1000 nm, and the coefficient of variation is less than 20%. The polymer fine particle permits highly sensitive assay by controlling the antigen- or antibody-immobilized state of the particle surface.