http://www.cd-bioparticles.com/p/Absolute-Mag-IgG-Iron-Oxide-Nanoparticles-15-nm_20_194_225_5012.htmlAbsolute Mag IgG Iron Oxide Nanoparticles are IgG conjugated water soluble iron oxide nanoparticles, in which IgGs are covalently attached to carboxyl groups on the nanoparticles surface with a IO:IgG ration no less than 1:3. Absolute Mag IgG Iron Oxide Nanoparticles are stable in dilute (10mM or less) PBS and Tris buffer (pH=7.4). Customer can choose the desired IgGs. Absolute Mag IgG Iron Oxide Nanoparticles can be used to capture the respective antibody in a biological assay.