Corpus StriatumNeostriatumBehavior, AnimalDopamineReceptors, Dopamine D2Huntington DiseaseDopamine Plasma Membrane Transport ProteinsBasal GangliaRacloprideReceptors, Dopamine D1OxidopamineSubstantia NigraNeuronsCaudate NucleusDopamine AntagonistsDopamine and cAMP-Regulated Phosphoprotein 323,4-Dihydroxyphenylacetic AcidTropanesSalicylamidesReceptors, DopamineTyrosine 3-MonooxygenaseQuinolinic AcidRats, Sprague-DawleyLevodopaDopamine AgentsParkinson Disease, SecondaryHomovanillic AcidNitro CompoundsParkinsonian DisordersMethamphetamineDopamine AgonistsAmphetamineDihydroxyphenylalanineMicrodialysisSynaptosomes1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineNerve Tissue ProteinsParkinson DiseaseDopamine Uptake InhibitorsNeural PathwaysDyskinesia, Drug-InducedGlobus PallidusEnkephalinsInterneurons