The extracellular lining layer of the pulmonary alveolus in mammals including man.
D000818:Animals; D005110:Extracellular Space / Q000166:cytology*; D000882:Haplorhini; D006651:Histocytochemistry; D006652:Histological Techniques; D006801:Humans; D008322:Mammals; D008854:Microscopy, Electron; D011650:Pulmonary Alveoli / Q000166:cytology*