Streptavidin-coated beads as solid support
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Magnetic particles are used as a solid support phase in immunoassays. MagSi-STA are superparamagnetic silica beads with a surface coating of streptavidin for use with biotinylated antibodies.
MagSi-S COOH and MagSi-S Tosyl are the most suited surface modifications to use in conjunction with immunoassay applications.