title: Cholinergic enzyme systems in Parkinson's disease.
mesh_terms: D000328:Adult; D000368:Aged; D001921:Brain / Q000201:enzymology*; D002795:Choline O-Acetyltransferase / Q000378:metabolism*; D002799:Cholinergic Fibers / Q000378:metabolism*; D002802:Cholinesterases / Q000378:metabolism*; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000201:enzymology*; D014446:Tyrosine 3-Monooxygenase / Q000378:metabolism
chemical_list: D014446:Tyrosine 3-Monooxygenase; D002795:Choline O-Acetyltransferase; D002802:Cholinesterases