Description_x000D_ Application_x000D_ Streptavidin iron oxide particles are used in protein chromatography, affinity chromatography, and recombinant protein expression and analysis. Streptavidin iron oxide particles have been used to study imaging of cellular spread on a three-dimensional scaffold by means of a novel cell-labeling technique for high-resolution computed tomography. Streptavidin iron oxide particles have also been used to study in vitro biomedical applications of functionalized iron oxide nanoparticles._x000D_ Used for the purification of biotin containing proteins or DNA binding proteins_x000D_ Physical form_x000D_ Suspension in 0.85% NaCl, 0.01 M phosphate, pH 8.0, containing 0.1% bovine serum albumin, 0.1% sodium azide