PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3821910-1 1987 Tumor localization by a 131I-labeled monoclonal antibody to CEA has been evaluated in a series of 50 patients with clinically suspected primary or recurrent gastrointestinal cancer. Iodine-131 24-28 CEA cell adhesion molecule 3 Homo sapiens 60-63