The demonstration of the osmiophilic lining layer of the pulmonary alveolus fixed in situ.
D000818:Animals; D001812:Blood-Brain Barrier; D004848:Epithelium; D006652:Histological Techniques; D008722:Methods; D051379:Mice; D008854:Microscopy, Electron; D011650:Pulmonary Alveoli / Q000033:anatomy & histology* / Q000166:cytology; D012137:Respiratory System / Q000166:cytology; D013194:Staining and Labeling