title: Histological preservation and ultrastructure of alveolar surfactant.
abstract: We have discussed the three-dimensional structure of lamellar bodies as visible intracellular storage sites of surfactant. Among the intraalveolar structures, tubular myelin, a liquid crystal, represents a large aggregate of surfactant lipids and proteins of still-unclear significance. Elaborate fixation methods permit visualization in situ of localized pools of fluid that sometimes extend laterally, covering small areas of the alveolar surface.
mesh_terms: D000818:Animals; D001688:Biological Products; D005614:Freeze Fracturing; D006801:Humans; D008854:Microscopy, Electron; D009186:Myelin Sheath; D009940:Organoids / Q000032:analysis / Q000648:ultrastructure; D011506:Proteins; D011650:Pulmonary Alveoli / Q000032:analysis / Q000648:ultrastructure*; D011663:Pulmonary Surfactants / Q000032:analysis*
chemical_list: D001688:Biological Products; D011506:Proteins; D011663:Pulmonary Surfactants; C018167:tubular myelin