RegenerationExtremitiesAmbystoma mexicanumSalamandridaeNotophthalmus viridescensTurbellariaAmbystomaAnimal FinsPlanariansTriturusTailAmputationForelimbUrodelaPleurodelesWilms TumorNotophthalmusNerve TissueZebrafishIn Situ HybridizationAnaplasiaAmputation StumpsCell DedifferentiationAnimal StructuresPentosan Sulfuric PolyesterWound HealingGene Expression Regulation, DevelopmentalCell DifferentiationMorphogenesisGenes, HomeoboxMesodermZebrafish ProteinsEpidermisDermisCartilageAnimals, Genetically ModifiedFibroblast Growth FactorsTretinoinBody PatterningMSX1 Transcription FactorCellular MicroenvironmentHomeodomain ProteinsLimb BudsChoristomaDenervationXenopus ProteinsPAX7 Transcription FactorXenopus laevisHindlimbMolecular Sequence DataMultipotent Stem CellsTenascinEmbryo, NonmammalianLarvaCell ProliferationAmino Acid SequenceT-Box Domain ProteinsKidney NeoplasmsUreterHedgehog ProteinsStem CellsDNA, ComplementaryImmunohistochemistryGene ExpressionHeadBromodeoxyuridineHelminth ProteinsModels, BiologicalCell TransplantationWnt ProteinsMusclesBone and BonesSignal TransductionBase SequenceExtracellular MatrixGene Expression RegulationKidneyKeratinsGene Expression Profilingbeta CateninMicroscopy, ElectronDNA PrimersReceptors, Fibroblast Growth FactorCell DivisionSequence AlignmentBlotting, NorthernTime FactorsSequence Homology, Amino AcidReverse Transcriptase Polymerase Chain ReactionModels, AnimalCell LineageTranscription FactorsRNA InterferenceFluorescent Antibody TechniqueRNA, MessengerSequence Analysis, DNACloning, MolecularSpinal CordMitosisCell Movement