Staining tissues of central nervous system with Lac dye.
D000818:Animals; D001369:Axons; D002490:Central Nervous System / Q000033:anatomy & histology*; D000882:Haplorhini; D006801:Humans; D009186:Myelin Sheath / Q000033:anatomy & histology; D051381:Rats; D013194:Staining and Labeling