title: Development of axonal membrane specializations defines nodes of Ranvier and precedes Schwann cell myelin elaboration.
mesh_terms: D000818:Animals; D001369:Axons / Q000502:physiology* / Q000648:ultrastructure; D002462:Cell Membrane / Q000502:physiology; D005614:Freeze Fracturing; D008854:Microscopy, Electron; D009186:Myelin Sheath / Q000502:physiology*; D011901:Ranvier's Nodes / Q000502:physiology* / Q000648:ultrastructure; D051381:Rats; D012583:Schwann Cells / Q000502:physiology* / Q000648:ultrastructure