title: Levodopa in the presymptomatic diagnosis of Huntington's chorea.
mesh_terms: D002628:Chemoreceptor Cells; D004295:Dihydroxyphenylalanine; D004298:Dopamine; D006801:Humans; D006816:Huntington Disease / Q000175:diagnosis*
chemical_list: D004295:Dihydroxyphenylalanine; D004298:Dopamine