title: The formation of 3-hydroxy-4-methoxyphenylalanine and 3-hydroxy-4-methoxyphenethylamine in plasma during L-DOPA therapy in patients with Parkinson's disease.
mesh_terms: D000368:Aged; D004298:Dopamine / Q000031:analogs & derivatives* / Q000097:blood; D006801:Humans; D007980:Levodopa / Q000627:therapeutic use*; D008781:Methyltyrosines / Q000097:blood*; D010300:Parkinson Disease / Q000097:blood* / Q000188:drug therapy; D014443:Tyrosine / Q000031:analogs & derivatives*
chemical_list: D008781:Methyltyrosines; C031065:3-hydroxy-4-methoxyphenethylamine; D014443:Tyrosine; D007980:Levodopa; C008404:3-methoxytyrosine; D004298:Dopamine