title: Intestinal decarboxylation of L-Dopa in relation to dose requirement in Parkinson's disease.
mesh_terms: D000284:Administration, Oral; D000368:Aged; D002250:Carbon Radioisotopes; D055598:Chemical Phenomena; D002621:Chemistry; D002852:Chromatography, Ion Exchange; D003653:Decarboxylation; D004064:Digestive System / Q000378:metabolism; D004295:Dihydroxyphenylalanine / Q000008:administration & dosage / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D008875:Middle Aged; D010300:Parkinson Disease / Q000378:metabolism*
chemical_list: D002250:Carbon Radioisotopes; D004295:Dihydroxyphenylalanine