title: Letter: Scanning electron micrographs: another look at early emphysema lesions.
mesh_terms: D000328:Adult; D004847:Epithelial Cells; D004848:Epithelium / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008264:Macrophages / Q000648:ultrastructure*; D008855:Microscopy, Electron, Scanning; D011650:Pulmonary Alveoli / Q000648:ultrastructure*; D011656:Pulmonary Emphysema / Q000473:pathology*