Tract orientation and the intensity of myelin staining.
D000818:Animals; D001921:Brain / Q000033:anatomy & histology / Q000166:cytology; D002490:Central Nervous System / Q000166:cytology; D003720:Densitometry; D008867:Microtomy; D009186:Myelin Sheath; D010525:Peripheral Nerves / Q000166:cytology; D051381:Rats; D013194:Staining and Labeling