Degeneration in the spinal cord of old rats.
D000375:Aging; D000818:Animals; D001369:Axons / Q000648:ultrastructure; D005727:Ganglia, Spinal / Q000033:anatomy & histology; D008297:Male; D009410:Nerve Degeneration; D009412:Nerve Fibers / Q000648:ultrastructure; D051381:Rats; D011916:Rats, Inbred F344; D013116:Spinal Cord / Q000033:anatomy & histology*