NicotineNicotinic AgonistsTobacco Use DisorderProtein BindingGanglionic StimulantsMolecular Sequence DataBinding SitesBinding, CompetitiveReceptors, NicotinicLigandsAmino Acid SequenceMecamylamineReceptors, Cell SurfaceCotinineBase SequenceCell LineKineticsNicotinic AntagonistsChewing GumReceptors, GlucocorticoidSubstance Withdrawal SyndromeTobacco Use Cessation ProductsSmoking CessationReceptors, ImmunologicSmokingDNAMannosephosphatesReceptors, Thyroid HormoneReceptor, IGF Type 2Protein Structure, TertiaryRecombinant ProteinsAdministration, CutaneousReceptors, SteroidTransfectionReceptors, sigmaDihydro-beta-ErythroidineSignal TransductionModels, MolecularProtein ConformationReceptors, Cytoplasmic and NuclearTarsRetinoid X ReceptorsDNA-Binding ProteinsRecombinant Fusion Proteinsalpha7 Nicotinic Acetylcholine ReceptorSelf AdministrationPromoter Regions, GeneticCell MembraneDimerizationResponse ElementsSequence Homology, Amino AcidReceptors, LDLCarrier ProteinsTranscription FactorsMutagenesis, Site-DirectedCricetinaeMutationCHO CellsCloning, MolecularCells, CulturedChickensLectins, C-TypeSolubilityAzocinesMolecular WeightDose-Response Relationship, DrugPeptide FragmentsReceptors, Retinoic AcidGene Expression RegulationElectrophoresis, Polyacrylamide GelMacromolecular SubstancesRabbitsChromatography, AffinityCattleAconitineAntibodies, MonoclonalDNA PrimersRats, Sprague-DawleyConditioning, OperantDexamethasoneQuinolizinesPhosphorylationTobacco, SmokelessTobacco ProductsLiverTobaccoTranscription, GeneticRewardStructure-Activity RelationshipBicyclo Compounds, HeterocyclicMacrophagesAnabasineCarbon MonoxideReinforcement (Psychology)Behavior, AnimalSelf StimulationHexamethoniumBungarotoxinsTime FactorsDopamine