title: A study of spinal fluid homovanillic acid (HVA) in patients with diseases of the nervous system.
mesh_terms: D002819:Chorea / Q000134:cerebrospinal fluid; D004295:Dihydroxyphenylalanine / Q000627:therapeutic use; D006801:Humans; D009069:Movement Disorders / Q000134:cerebrospinal fluid; D009422:Nervous System Diseases / Q000134:cerebrospinal fluid*; D010300:Parkinson Disease / Q000134:cerebrospinal fluid* / Q000175:diagnosis / Q000188:drug therapy; D010648:Phenylacetates / Q000134:cerebrospinal fluid*
chemical_list: D010648:Phenylacetates; D004295:Dihydroxyphenylalanine