title: Cerebrospinal homovanillic acid and parkinsonism.
mesh_terms: D000367:Age Factors; D004295:Dihydroxyphenylalanine / Q000627:therapeutic use*; D005470:Fluorometry; D006719:Homovanillic Acid / Q000134:cerebrospinal fluid* / Q000302:isolation & purification; D006801:Humans; D010300:Parkinson Disease / Q000134:cerebrospinal fluid* / Q000145:classification / Q000175:diagnosis / Q000188:drug therapy; D010648:Phenylacetates / Q000134:cerebrospinal fluid*
chemical_list: D010648:Phenylacetates; D004295:Dihydroxyphenylalanine; D006719:Homovanillic Acid