Satellite Cells, Skeletal MusclePAX7 Transcription FactorMuscle DevelopmentRegenerationMyoD ProteinMuscle, SkeletalCell DifferentiationDNA, SatelliteSatellite Cells, PerineuronalRNA, SatellitePAX2 Transcription FactorPaired Box Transcription FactorsSatellite CommunicationsMuscle Fibers, SkeletalSatellite VirusesMyoblastsMyogenic Regulatory Factor 5MyogeninCardiotoxinsPAX9 Transcription FactorMyostatinSatellite ImageryMice, Inbred mdxMuscular AtrophyCells, CulturedHospitals, SatelliteCell ProliferationCobra Cardiotoxin ProteinsSpacecraftMyoblasts, SkeletalMyogenic Regulatory FactorsStem Cells