Ambystoma mexicanumRegenerationExtremitiesTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensForelimbCell DifferentiationSalamandridaeMammalsAnimal FinsPlanariansTriturusTailAmputationGene Expression Regulation, DevelopmentalUrodelaIn Situ HybridizationPleurodelesZebrafishWilms TumorNerve TissueStem CellsTretinoinMolecular Sequence DataCell ProliferationSignal TransductionHomeodomain ProteinsCells, CulturedMorphogenesisMesodermEpidermisTranscription FactorsAnaplasiaGene Expression RegulationCell DedifferentiationWound HealingZebrafish ProteinsAmino Acid SequenceBase SequenceAmputation StumpsCell LineageCell DivisionAnimal StructuresRNA, MessengerGenes, HomeoboxCartilagePentosan Sulfuric PolyesterImmunohistochemistryAnimals, Genetically ModifiedGene ExpressionFibroblast Growth FactorsBody PatterningSex DifferentiationCell LineModels, BiologicalDermisReverse Transcriptase Polymerase Chain ReactionMultipotent Stem CellsEmbryo, NonmammalianEmbryonic Stem CellsXenopus ProteinsCellular MicroenvironmentGene Expression ProfilingMSX1 Transcription FactorDNA, ComplementaryLimb BudsT-Box Domain ProteinsXenopus laevisPAX7 Transcription FactorTime FactorsLarvaHedgehog ProteinsDNA PrimersChoristomaBromodeoxyuridineWnt ProteinsTrans-ActivatorsDenervationDNA-Binding ProteinsHindlimbMusclesKeratinsTenascinMice, Inbred C57BLPhenotypeBlotting, NorthernOsteogenesisOsteoblastsBone and BonesAntigens, DifferentiationMice, KnockoutFluorescent Antibody TechniqueSequence Homology, Amino AcidExtracellular Matrixbeta CateninKidney NeoplasmsMice, TransgenicRNA Interference