NicotineSmokeTobacco Smoke PollutionNicotinic AgonistsTobacco Use DisorderGanglionic StimulantsCotinineSmokingReceptors, NicotinicMecamylamineSmoking CessationTobaccoTarsNicotinic AntagonistsChewing GumSubstance Withdrawal SyndromeTobacco Use Cessation ProductsAdministration, CutaneousDihydro-beta-ErythroidineTobacco ProductsPlants, Toxicalpha7 Nicotinic Acetylcholine ReceptorSelf AdministrationDose-Response Relationship, DrugFiresAzocinesAir Pollution, IndoorNitrosaminesCarbon MonoxideTobacco, SmokelessInhalation ExposureCarboxyhemoglobinRats, Sprague-DawleyAconitinePrenatal Exposure Delayed EffectsConditioning, OperantQuinolizinesRewardEnvironmental ExposureAnabasineTobacco IndustryTime FactorsRestaurantsSelf StimulationLungReinforcement (Psychology)Bicyclo Compounds, HeterocyclicBehavior, AnimalHexamethoniumMaternal ExposureAcroleinAnalysis of VarianceMentholPregnancyPyridinesWoodDopamineBungarotoxinsBenzazepinesHexamethonium CompoundsQuinoxalinesVentral Tegmental AreaMotor ActivityFiltrationAryl Hydrocarbon HydroxylasesMotivationBrainCarcinogensMice, Inbred C57BL