title: Letter: In-vitro production of carcinoembryonic antigen by normal and neoplastic colon.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis*; D002478:Cells, Cultured; D003106:Colon / Q000276:immunology*; D003110:Colonic Neoplasms / Q000276:immunology*; D006801:Humans; D007106:Immune Sera; D066298:In Vitro Techniques; D011863:Radioimmunoassay
chemical_list: D002272:Carcinoembryonic Antigen; D007106:Immune Sera