title: [Determination of serum CEA level in lung cancer patients and high-risk population in Yunnan Tin Mine Corporation].
mesh_terms: D000328:Adult; D002272:Carcinoembryonic Antigen / Q000032:analysis*; D002294:Carcinoma, Squamous Cell / Q000276:immunology*; D002681:China; D006801:Humans; D008175:Lung Neoplasms / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D008906:Mining; D009784:Occupational Diseases / Q000276:immunology*; D012306:Risk; D014001:Tin
chemical_list: D002272:Carcinoembryonic Antigen; D014001:Tin