Cell DifferentiationMyoblastsMuscle DevelopmentMyoD ProteinMyogeninGrowth Differentiation Factor 5Growth Differentiation Factor 9Myoblasts, SkeletalMyeloid Differentiation Factor 88Growth Differentiation FactorsGrowth Differentiation Factor 15Growth Differentiation Factor 6Cell LineMuscle, SkeletalGrowth Differentiation Factor 3NeuregulinsCells, CulturedGrowth Differentiation Factor 1MusclesSatellite Cells, Skeletal MuscleSignal TransductionRhabdomyosarcomaBone Morphogenetic Protein 15Myogenic Regulatory Factor 5Gene Expression Regulation, DevelopmentalBone Morphogenetic ProteinsGene Expression RegulationRNA, MessengerTranscription FactorsMuscle Fibers, SkeletalStem CellsMuscle CellsPAX7 Transcription FactorMice, Inbred C57BLCell ProliferationCell DivisionMuscle ProteinsMyostatinMyogenic Regulatory FactorsRegenerationDNA-Binding ProteinsMolecular Sequence DataAntigens, DifferentiationMyosin Heavy ChainsMice, KnockoutBase SequenceCell LineageFollistatinCreatine KinasePaired Box Transcription FactorsGene ExpressionReverse Transcriptase Polymerase Chain ReactionTransfectionPromoter Regions, GeneticCell FusionTranscription, GeneticDown-RegulationTransforming Growth Factor betaMEF2 Transcription FactorsImmunohistochemistryIntercellular Signaling Peptides and ProteinsBasic Helix-Loop-Helix Transcription FactorsHomeodomain ProteinsMesenchymal Stromal CellsTrans-ActivatorsGrowth SubstancesToll-Like Receptor 4QuailRhabdomyosarcoma, AlveolarSmad ProteinsMuscular Dystrophy, FacioscapulohumeralRNA, Small InterferingBlotting, WesternUp-RegulationActivinsBone Marrow CellsMice, TransgenicNuclear ProteinsChick Embryop120 GTPase Activating ProteinPhosphorylationPhenotypeProtein BindingRecombinant ProteinsRNA InterferenceTime FactorsCarrier ProteinsCreatine Kinase, MM FormAmino Acid SequenceRepressor ProteinsTretinoinModels, BiologicalIn Situ HybridizationGene Expression ProfilingMesodermProto-Oncogene ProteinsCell CycleNerve Tissue ProteinsToll-Like ReceptorsToll-Like Receptor 2