title: Pathologic changes in the peripheral airways of young cigarette smokers.
mesh_terms: D000328:Adult; D000367:Age Factors; D001980:Bronchi / Q000473:pathology*; D001991:Bronchitis / Q000473:pathology; D006801:Humans; D008264:Macrophages / Q000473:pathology; D011650:Pulmonary Alveoli / Q000473:pathology; D011656:Pulmonary Emphysema / Q000473:pathology; D012907:Smoking / Q000473:pathology*