title: Effects of smoking on lung structure of appalachian coal workers.
mesh_terms: D000368:Aged; D001991:Bronchitis / Q000473:pathology; D003032:Coal Mining; D003094:Collagen / Q000032:analysis; D004391:Dust / Q000032:analysis; D006801:Humans; D008168:Lung / Q000032:analysis / Q000473:pathology*; D008297:Male; D009784:Occupational Diseases / Q000150:complications / Q000473:pathology*; D009787:Occupational Medicine; D010414:Pennsylvania; D011009:Pneumoconiosis / Q000150:complications / Q000473:pathology*; D011656:Pulmonary Emphysema / Q000473:pathology; D011660:Pulmonary Heart Disease / Q000473:pathology; D012822:Silicon Dioxide / Q000032:analysis; D012907:Smoking / Q000473:pathology*
chemical_list: D004391:Dust; D012822:Silicon Dioxide; D003094:Collagen