Absence or delay of myelination in animals.
D000818:Animals; D002415:Cats; D002493:Central Nervous System Diseases / Q000503:physiopathology; D003711:Demyelinating Diseases / Q000175:diagnosis* / Q000503:physiopathology; D004285:Dogs; D006041:Goats; D051379:Mice; D008816:Mice, Jimpy; D008821:Mice, Quaking; D009154:Mutation; D009186:Myelin Sheath / Q000502:physiology*; D010523:Peripheral Nervous System Diseases / Q000503:physiopathology; D051381:Rats