title: Cortical cholinergic deficit in mentally impaired Parkinsonian patients.
mesh_terms: D000544:Alzheimer Disease / Q000378:metabolism; D002540:Cerebral Cortex / Q000378:metabolism*; D002794:Choline / Q000378:metabolism*; D006801:Humans; D010300:Parkinson Disease / Q000378:metabolism*
chemical_list: D002794:Choline