title: Variations in carcinoembryonic antigen levels correlated with tobacco consumption in normal subject.
mesh_terms: D000328:Adult; D002272:Carcinoembryonic Antigen / Q000032:analysis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010947:Plants, Toxic; D012907:Smoking; D014026:Nicotiana
chemical_list: D002272:Carcinoembryonic Antigen