Satellite Cells, Skeletal MusclePAX7 Transcription FactorMuscle DevelopmentRegenerationMyoD ProteinMuscle, SkeletalCell DifferentiationDNA, SatelliteSatellite Cells, PerineuronalMyoblastsRNA, SatelliteMyoblasts, SkeletalMuscle Fibers, SkeletalSatellite CommunicationsMyogeninSatellite VirusesMyogenic Regulatory Factor 5Cell FusionCardiotoxinsMyostatinMusclesMice, Inbred mdxCells, CulturedMyogenic Regulatory FactorsMuscular AtrophySatellite ImageryCell ProliferationMuscle ProteinsHospitals, SatelliteCobra Cardiotoxin ProteinsSpacecraftMuscular DystrophiesStem CellsHypertrophyMuscular Diseases