PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1714933-7 1991 CTLA4Ig also immunoprecipitated B7 from cell surface 125I-labeled extracts of these cells. Iodine-125 53-57 cytotoxic T-lymphocyte protein 4 Cricetulus griseus 0-5