Muscle DevelopmentMuscle, SkeletalMyoD ProteinStem CellsSatellite Cells, Skeletal MuscleMusclesMyoblasts, SkeletalMyogenic Regulatory Factor 5PAX7 Transcription FactorMuscle Fibers, SkeletalMuscle ProteinsCell DifferentiationMyoblastsMyocytes, Smooth MuscleSomitesPaired Box Transcription FactorsRegenerationCells, CulturedGene Expression Regulation, DevelopmentalMuscle ContractionMice, Inbred C57BLHematopoietic Stem CellsChemokine CXCL12Signal TransductionMitochondria, MuscleMice, TransgenicCell LineageMuscle CellsEndothelial CellsTranscription FactorsExerciseMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchImmunohistochemistryGreen Fluorescent ProteinsGlycogenMuscle, SmoothMuscle, Smooth, VascularAntigens, CD34Cell ProliferationRNA, MessengerMuscle FatigueQuadriceps MuscleTime FactorsMyeloid Progenitor CellsMuscular DiseasesStem Cell TransplantationColony-Forming Units AssayMuscular AtrophyBone Marrow CellsMesodermHomeodomain ProteinsInsulinPhysical EnduranceIsometric ContractionPhysical ExertionChick EmbryoMyogeninMuscle DenervationPhosphocreatineGene Expression RegulationMyogenic Regulatory FactorsReceptors, NotchMyosin Heavy ChainsNeural Stem CellsLegMice, KnockoutOxygen ConsumptionGlucosePhenotypeCitrate (si)-SynthaseHematopoiesisMyofibrilsIn Situ HybridizationModels, BiologicalLactic AcidCell MovementCell LineHindlimbExtremitiesEmbryo, MammalianRabbitsReverse Transcriptase Polymerase Chain ReactionBiopsyEmbryo, NonmammalianPhosphorylationGene ExpressionMultipotent Stem CellsDrosophila ProteinsErythroid Precursor CellsMyostatinQuailBiological MarkersMolecular Sequence DataGlucose Transporter Type 4Flow CytometrySarcolemmaRegional Blood FlowCell SeparationNeurogenesis