PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2600425-7 1989 Depending on the matrix used, the IgG3 eluted from the protein A columns exhibited a contamination of 1.8-88 ppm (weight/weight) protein A. Amongst the gels with IgG3 capacities greater than 10 mg/ml, the least contamination with protein A was observed in the IgG3 fractions from immobilized rProtein A and Protein A-Sepharose CL-4B (Fermentech). Sepharose CL 4B 317-332 immunoglobulin heavy constant gamma 3 (G3m marker) Homo sapiens 34-38 6266723-2 1981 A covalently bound to Sepharose CL-4B was used to enrich sera in the IgG3 subclass of antibodies. Sepharose CL 4B 22-37 immunoglobulin heavy constant gamma 3 (G3m marker) Homo sapiens 69-73