Macroglial differentiation and myelination.
D000818:Animals; D000831:Animals, Newborn; D002415:Cats; D002454:Cell Differentiation; D008854:Microscopy, Electron; D009186:Myelin Sheath / Q000254:growth & development*; D009457:Neuroglia / Q000254:growth & development*; D009900:Optic Nerve / Q000166:cytology*