title: [Neurotransmitters in the aged].
mesh_terms: D000368:Aged; D000375:Aging; D000544:Alzheimer Disease / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000378:metabolism*; D003704:Dementia / Q000378:metabolism; D006801:Humans; D008875:Middle Aged; D018377:Neurotransmitter Agents / Q000378:metabolism*; D051381:Rats
chemical_list: D018377:Neurotransmitter Agents