The extraneous coat of lung alveoli.
D000818:Animals; D000831:Animals, Newborn; D003102:Colloids; D006651:Histocytochemistry; D007501:Iron; D008853:Microscopy; D008854:Microscopy, Electron; D011650:Pulmonary Alveoli / Q000032:analysis / Q000166:cytology*; D011817:Rabbits; D013194:Staining and Labeling; D013499:Surface Properties; D013501:Surface-Active Agents
D003102:Colloids; D013501:Surface-Active Agents; D007501:Iron