Satellite Cells, Skeletal MusclePAX7 Transcription FactorMuscle, SkeletalMuscle DevelopmentRegenerationMuscle Fibers, SkeletalMyoD ProteinMyoblastsMusclesCell DifferentiationCells, CulturedCell LineageSatellite Cells, PerineuronalMuscle ProteinsMyoblasts, SkeletalMyogenic Regulatory Factor 5MyogeninDNA, SatelliteMuscle ContractionMice, Inbred mdxMuscle Fibers, Fast-TwitchMitochondria, MuscleMuscle Fibers, Slow-TwitchDesminCell ProliferationMuscle, SmoothPaired Box Transcription FactorsMuscular AtrophyStem CellsRNA, MessengerMice, Inbred C57BLMuscular DiseasesMuscle DenervationMuscle, Smooth, VascularSignal TransductionGene Expression RegulationMuscle CellsRNA, SatelliteMuscle FatigueExerciseMyostatinGlycogenQuadriceps MuscleCell DivisionMyosin Heavy ChainsAgingMyofibrils