Enhancer Elements, GeneticBase SequenceMolecular Sequence DataTranscription FactorsPromoter Regions, GeneticTranscription, GeneticDNA-Binding ProteinsGene Expression RegulationBinding SitesRegulatory Sequences, Nucleic AcidNuclear ProteinsGene Expression Regulation, DevelopmentalCell LineHIV EnhancerDeoxyribonuclease ITransfectionGenes, RegulatorChloramphenicol O-AcetyltransferaseGenes, ReporterIntronsDNADrosophila ProteinsPlasmidsMEF2 Transcription FactorsMyogenic Regulatory FactorsMice, TransgenicMutationHomeodomain ProteinsProtein BindingTranscriptional ActivationRepressor ProteinsTrans-ActivatorsDrosophilaChromatinRepetitive Sequences, Nucleic AcidHeLa CellsConserved SequenceRestriction MappingSequence Homology, Nucleic AcidCCAAT-Enhancer-Binding ProteinsRNA, MessengerAnimals, Genetically ModifiedTransgenesModels, GeneticExonsBasic Helix-Loop-Helix Transcription FactorsDNA FootprintingCloning, MolecularOrgan SpecificityGlobinsSimian virus 40Sequence DeletionCells, CulturedAmino Acid SequenceLuciferasesGenes, InsectCell NucleusRecombinant Fusion ProteinsTumor Cells, CulturedChromatin ImmunoprecipitationLymphoid Enhancer-Binding Factor 1Insulator ElementsImmunoglobulin Heavy ChainsDrosophila melanogasterGene Expression Regulation, ViralCell DifferentiationDNA PrimersImmunoglobulin kappa-ChainsHistonesGene ExpressionOligodeoxyribonucleotidesDNA, ViralGenes, ImmunoglobulinPolyomavirusResponse ElementsGenesGenes, ViralInsect ProteinsSkin AbsorptionCCAAT-Enhancer-Binding Protein-betaSignal TransductionMutagenesis, Site-DirectedErythroid-Specific DNA-Binding FactorsProto-Oncogene Proteins c-etsDNA Mutational AnalysisZebrafishHelix-Loop-Helix MotifsSequence AlignmentConsensus SequenceCCAAT-Enhancer-Binding Protein-alphaHepatocyte Nuclear Factor 3-alphaOligonucleotide ProbesRNA SplicingElectrophoretic Mobility Shift AssayEvolution, MolecularProto-Oncogene ProteinsPolycomb Repressive Complex 2Alternative SplicingB-LymphocytesGenetic Vectors