Ambystoma mexicanumRegenerationExtremitiesTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensForelimbSalamandridaeAnimal FinsPlanariansTriturusTailAmputationUrodelaPleurodelesWilms TumorNerve 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 ExpressionHead