title: Plasma carcinoembryonic antigen (CEA), tumor CEA, and tumor histology.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis*; D003106:Colon / Q000032:analysis; D003110:Colonic Neoplasms / Q000032:analysis* / Q000097:blood; D006801:Humans; D012004:Rectal Neoplasms / Q000032:analysis* / Q000097:blood
chemical_list: D002272:Carcinoembryonic Antigen