Description_x000D_ Application_x000D_ Protein G-agarose is used in affinity chromatography, protein chromatography, antibody purification and characterization, immunoaffinity matrices, protein A, G and L resins, and purification and detection. Protein G-agarose has been used to study breast cancer and falsely elevated thyroid-stimulating hormone (TSH)._x000D_ Packaging_x000D_ 1 g in poly bottle_x000D_ 100, 250 mg in poly bottle_x000D_ Preparation Note_x000D_ Prepared with a genetically engineered Protein G which retains its high affinity for IgG and lacks albumin and Fab binding sites and membrane binding regions.