Importance

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Abstract

There is provided a magnetic particle to which a large amount of target substance can bind upon separation, analysis and the like of the target substance, the particle exhibiting a higher rate of the magnetic separation. The magnetic particle to which a target substance can bind, comprising a core particle having magnetism and a polymer coat layer comprising a polymer shell portion in which a rough coating of polymer is provided on a surface of the core particle. This magnetic particle has a roughness due to a surface roughness of the polymer shell portion wherein a specific surface area (m²/g) of the magnetic particle is 1.5 to 500 times a specific surface area (m²/g) of the core particle when the core particle is regarded as a smooth perfect sphere.

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First Claim