title: Letter: Radioimmunoassay of alpha-fetoprotein in gastrointestinal diseases.
mesh_terms: D000328:Adult; D000510:Alpha-Globulins / Q000032:analysis*; D005326:Fetal Proteins / Q000032:analysis*; D005767:Gastrointestinal Diseases / Q000175:diagnosis / Q000276:immunology*; D006801:Humans; D011863:Radioimmunoassay
chemical_list: D000510:Alpha-Globulins; D005326:Fetal Proteins