Hair DiseasesTranscription FactorsTranscription, GeneticSignal TransductionMolecular Sequence DataProtein Sorting SignalsGene Expression RegulationBase SequenceCell LineRNA, MessengerAmino Acid SequencePromoter Regions, GeneticDNA-Binding ProteinsSp1 Transcription FactorTranscriptional ActivationBinding SitesPhosphorylationMutationTrans-ActivatorsProtein BindingTransfectionNuclear ProteinsCells, CulturedRepressor ProteinsRecombinant Fusion ProteinsTranscription Initiation SiteDNACell DifferentiationCell NucleusSTAT3 Transcription FactorHeLa CellsTranscription Factor AP-1RNA Polymerase IICloning, MolecularPlasmidsReverse Transcriptase Polymerase Chain ReactionProtein Structure, TertiaryModels, BiologicalMice, KnockoutReceptors, Antigen, T-CellTumor Cells, CulturedGenes, ReporterMice, Inbred C57BLReceptors, Antigen, B-CellBasic Helix-Loop-Helix Transcription FactorsGene ExpressionTranscription Factors, TFIITranscription Factor TFIIDHomeodomain ProteinsDNA-Directed RNA PolymerasesNF-kappa BSequence Homology, Amino AcidGene Expression Regulation, BacterialBlotting, Western