title: Electron microscopy studies of pulmonary alveolar macrophages in situ.
mesh_terms: D000818:Animals; D004848:Epithelium / Q000648:ultrastructure; D006801:Humans; D008264:Macrophages / Q000648:ultrastructure*; D011650:Pulmonary Alveoli / Q000648:ultrastructure*; D051381:Rats