title: On-off syndrome in Parkinson's disease and intravenous levodopa.
mesh_terms: D001921:Brain / Q000502:physiology; D007263:Infusions, Parenteral; D007980:Levodopa / Q000008:administration & dosage* / Q000097:blood; D010300:Parkinson Disease / Q000188:drug therapy / Q000503:physiopathology*; D011954:Receptors, Dopamine / Q000502:physiology; D013577:Syndrome
chemical_list: D011954:Receptors, Dopamine; D007980:Levodopa