Receptors, NicotinicTobacco Use DisorderChromosomes, Human, Pair 15alpha7 Nicotinic Acetylcholine ReceptorNerve Tissue ProteinsPolymorphism, Single NucleotideEpilepsy, Frontal LobeGenetic Predisposition to DiseaseSmokingLinkage DisequilibriumMultigene FamilyNicotineGenotypeIron Regulatory Protein 2Inhalant AbuseHaplotypesGenome-Wide Association StudyMyasthenic Syndromes, CongenitalGene-Environment InteractionGenetic PleiotropyEuropean Continental Ancestry GroupGene FrequencyMyoclonic Epilepsy, JuvenileLung NeoplasmsAllelesCase-Control StudiesBungarotoxinsPhenotypeSchizophreniaGenetic VariationAfrican AmericansMuscle HypotoniaPrader-Willi SyndromeGenetic Association StudiesRisk FactorsCotinineNitrosaminesGenetic LociNicotinic AgonistsSmoking CessationPulmonary Disease, Chronic ObstructivePhysical Chromosome MappingMice, 129 StrainMice, Inbred C3HPolymorphism, GeneticGenetic Markers5' Untranslated RegionsPedigreePulmonary EmphysemaStartle ReactionAcrosome ReactionMice, Inbred DBACommunity Health PlanningAutopsyBrainReceptors, CholinergicFamilyAutistic DisorderChromosome MappingAsian Continental Ancestry GroupAge of OnsetPromoter Regions, GeneticGene Expression RegulationFinlandRiskAlcoholismMutationCohort StudiesGenetic LinkageElectrophoretic Mobility Shift AssayModels, GeneticLuciferasesOdds RatioPyridinesSp1 Transcription FactorProtein SubunitsRNAEpilepsySubstance-Related DisordersNeural InhibitionAttentionEuropeReal-Time Polymerase Chain ReactionDisease Models, AnimalMolecular Sequence DataRNA, MessengerLungLongitudinal StudiesHippocampusAdenocarcinomaAge FactorsSex FactorsMice, Inbred C57BLAmino Acid SequenceGene ExpressionLogistic ModelsCell Line, TumorProtein BindingUnited StatesPolymerase Chain Reaction