title: [Aging of the motor system].
mesh_terms: D000368:Aged; D000375:Aging; D000818:Animals; D001679:Biogenic Amines / Q000032:analysis; D002540:Cerebral Cortex / Q000166:cytology*; D003712:Dendrites / Q000166:cytology; D005116:Extrapyramidal Tracts / Q000032:analysis / Q000166:cytology*; D006801:Humans; D009412:Nerve Fibers / Q000166:cytology; D051381:Rats
chemical_list: D001679:Biogenic Amines