title: Increased carcinoembryonic antigen in heavy cigarette smokers.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis* / Q000302:isolation & purification; D006801:Humans; D007106:Immune Sera / Q000032:analysis; D008875:Middle Aged; D011230:Precancerous Conditions / Q000097:blood / Q000139:chemically induced / Q000209:etiology; D011863:Radioimmunoassay; D012907:Smoking
chemical_list: D002272:Carcinoembryonic Antigen; D007106:Immune Sera