Myogenic Regulatory Factor 5Myogenic Regulatory FactorsMyoD ProteinMyogeninTranscription FactorsMuscle DevelopmentPaired Box Transcription FactorsPAX7 Transcription FactorPAX2 Transcription FactorTranscription, GeneticDNA-Binding ProteinsGene Expression Regulation, DevelopmentalInterferon Regulatory FactorsMuscle, SkeletalPromoter Regions, GeneticTrans-ActivatorsMyoblastsSomitesMuscle ProteinsGene Expression RegulationMolecular Sequence DataBase SequenceCell DifferentiationPAX9 Transcription FactorSatellite Cells, Skeletal MuscleRNA, MessengerHomeodomain ProteinsCell LineRepressor ProteinsMyoblasts, SkeletalMEF2 Transcription FactorsSp1 Transcription FactorE-Box ElementsTranscriptional ActivationSignal TransductionMuscle Fibers, SkeletalBinding SitesTranscription Factor 7-Like 1 ProteinNuclear ProteinsProtein BindingIn Situ HybridizationReverse Transcriptase Polymerase Chain Reaction