Ambystoma mexicanumNotophthalmus viridescensSalamandridaeRegenerationExtremitiesUrodelaAmbystomaMuscle, SkeletalSatellite Cells, Skeletal MuscleNerve RegenerationLimb BudsMuscle DevelopmentMusclesForelimbLiver RegenerationTriturusCardiotoxinsMyoblastsCobra Cardiotoxin ProteinsPAX7 Transcription FactorMuscle Fibers, SkeletalPleurodelesHindlimbMyoblasts, SkeletalMyoD ProteinAmputationCell DifferentiationTailBone RegenerationMice, Inbred mdxMuscle ProteinsAmphibiansWound HealingAnimal FinsPlanariansIn Situ HybridizationMuscular DiseasesGene Expression Regulation, DevelopmentalTurbellariaMuscle ContractionMyogeninCell ProliferationMuscular Dystrophy, AnimalLimb SalvageLarvaStem CellsLimb Deformities, CongenitalMyogenic Regulatory Factor 5Time FactorsMice, Inbred C57BLFibroblast Growth FactorsElectromyographyMuscle Fibers, Slow-TwitchMuscle Fibers, Fast-TwitchMuscle, SmoothCells, CulturedSignal Transduction