CocaineCocaine-Related DisordersSelf AdministrationDopamine Uptake InhibitorsConditioning, OperantCrack CocaineReinforcement (Psychology)Reinforcement ScheduleDrug-Seeking BehaviorExtinction, PsychologicalBehavior, AddictiveDose-Response Relationship, DrugBenztropineBehavior, AnimalNucleus AccumbensRats, Sprague-DawleyButyrylcholinesteraseButorphanolNarcoticsMotor ActivityRewardDopamine AntagonistsMacaca mulattaFoodReceptors, Dopamine D2Substance Withdrawal SyndromeNaltrexoneRats, Long-EvansCuesTime FactorsDopamineAnalysis of VarianceSubstance-Related DisordersDrug InteractionsRats, WistarCentral Nervous System StimulantsMolecular Sequence DataSignal TransductionCells, CulturedCell LineDopamine Plasma Membrane Transport ProteinsMice, Inbred C57BLKineticsHeroinCalciumMutationProtein BindingMice, KnockoutAmino Acid SequencePhosphorylationSubstance Abuse DetectionStreet DrugsBase SequenceRNA, MessengerDopamine AgonistsHeroin DependenceGene Expression RegulationDNA-Binding ProteinsTranscription, GeneticCarrier ProteinsCorpus StriatumBrainTranscription FactorsModels, BiologicalEnzyme ActivationVentral Tegmental AreaTransfectionConditioning (Psychology)Binding SitesMicrodialysisNeuronsSaimiriEnzyme InhibitorsPromoter Regions, GeneticApoptosisRecombinant ProteinsPrenatal Exposure Delayed EffectsBlotting, WesternHydrogen-Ion ConcentrationDisease Models, AnimalReceptors, Dopamine D3Cell MembraneMembrane ProteinsRecombinant Fusion ProteinsCell Line, TumorBiological Transport