title: Fluctuation in response to chronic levodopa therapy: pathogenetic and therapeutic considerations.
mesh_terms: D003692:Delayed-Action Preparations; D006207:Half-Life; D006801:Humans; D007262:Infusions, Intravenous; D007980:Levodopa / Q000009:adverse effects / Q000097:blood / Q000627:therapeutic use*; D008134:Long-Term Care; D010300:Parkinson Disease / Q000097:blood / Q000188:drug therapy*
chemical_list: D003692:Delayed-Action Preparations; D007980:Levodopa