title: [Scanning electron microscopic observation of the lacrymal sac].
mesh_terms: D000328:Adult; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007765:Lacrimal Apparatus / Q000648:ultrastructure*; D007767:Lacrimal Duct Obstruction / Q000473:pathology*; D008855:Microscopy, Electron, Scanning