Satellite Cells, Skeletal MusclePAX7 Transcription FactorMuscle, SkeletalMuscle DevelopmentMuscle Fibers, SkeletalRegenerationMyoD ProteinMusclesCell DifferentiationCells, CulturedCell LineageMuscle ProteinsMyoblastsSatellite Cells, PerineuronalMyogenic Regulatory Factor 5Muscle ContractionMuscle, SmoothDNA, SatelliteMuscle Fibers, Fast-TwitchMyogeninMice, Inbred mdxMitochondria, MuscleMuscle Fibers, Slow-TwitchMuscle, Smooth, VascularMyoblasts, SkeletalMuscle DenervationMuscular AtrophyDesminCell ProliferationMuscle FatiguePaired Box Transcription FactorsMuscular DiseasesRNA, MessengerStem CellsMice, Inbred C57BLMuscle CellsQuadriceps MuscleSignal TransductionExerciseGlycogenGene Expression RegulationRNA, SatelliteMyostatinAgingMyofibrilsMyosin Heavy ChainsIsometric ContractionOculomotor MusclesCell DivisionImmunohistochemistry