Ambystoma mexicanumRegenerationExtremitiesTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensForelimbSalamandridaeAnimal FinsPlanariansTriturusTailAmputationUrodelaPleurodelesWilms TumorNerve TissueZebrafishIn Situ HybridizationAnaplasiaAmputation StumpsCell DedifferentiationAnimal StructuresPentosan Sulfuric PolyesterWound HealingMolecular Sequence DataGene Expression Regulation, DevelopmentalCell DifferentiationAmino Acid SequenceMorphogenesisGenes, HomeoboxMesodermEpidermisCartilageZebrafish ProteinsDermisAnimals, Genetically ModifiedTretinoinFibroblast Growth FactorsBody PatterningMSX1 Transcription FactorHomeodomain ProteinsCellular MicroenvironmentLimb BudsChoristomaXenopus laevisDenervationXenopus ProteinsPAX7 Transcription FactorBase SequenceHindlimbMultipotent Stem CellsTenascinEmbryo, NonmammalianLarvaCell ProliferationT-Box Domain ProteinsKidney NeoplasmsUreterModels, BiologicalGene ExpressionMusclesStem CellsHedgehog ProteinsDNA, ComplementaryImmunohistochemistrySignal TransductionHeadBromodeoxyuridine