title: Homovanillic acid in the ventricular fluid of patients with Parkinson's disease and other extrapyramidal diseases.
mesh_terms: D002552:Cerebral Ventricles; D002555:Cerebrospinal Fluid / Q000032:analysis*; D005116:Extrapyramidal Tracts; D006801:Humans; D009069:Movement Disorders / Q000378:metabolism*; D010300:Parkinson Disease / Q000378:metabolism*; D010648:Phenylacetates / Q000032:analysis*
chemical_list: D010648:Phenylacetates