title: Ultrastructure of the lacrimal sac.
mesh_terms: D002923:Cilia; D003593:Cytoplasm; D003607:Dacryocystitis / Q000473:pathology*; D003896:Desmosomes; D004847:Epithelial Cells; D006801:Humans; D002479:Inclusion Bodies; D007765:Lacrimal Apparatus / Q000473:pathology*; D008854:Microscopy, Electron; D008928:Mitochondria