title: Absence of circulating antibodies to carcinoembryonic antigen in patients with gastrointestinal malignancies.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D000941:Antigens; D002845:Chromatography; D002850:Chromatography, Gel; D003110:Colonic Neoplasms / Q000276:immunology*; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000276:immunology*; D006801:Humans; D007456:Iodine Isotopes; D011247:Pregnancy; D011863:Radioimmunoassay
chemical_list: D000906:Antibodies; D000941:Antigens; D007456:Iodine Isotopes