title: The human renal papilla: scanning and freeze-fracture studies.
mesh_terms: D004848:Epithelium / Q000648:ultrastructure; D005614:Freeze Fracturing; D006801:Humans; D007679:Kidney Medulla / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning