title: [Ultrastructural observations on human bronchial mucosa associated with chronic respiratory infections].
mesh_terms: D000328:Adult; D000368:Aged; D001980:Bronchi / Q000648:ultrastructure*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D009092:Mucous Membrane / Q000648:ultrastructure; D012141:Respiratory Tract Infections / Q000473:pathology*