Ambystoma mexicanumRegenerationAmbystomaExtremitiesTurbellariaNotophthalmusNotophthalmus viridescensForelimbCell ProliferationSalamandridaeAnimal FinsTriturusPlanariansTailUrodelaAmputationCell DifferentiationPleurodelesNerve TissueIn Situ HybridizationSignal TransductionCells, CulturedGene Expression Regulation, DevelopmentalWound HealingMorphogenesisCell DivisionChromatophoresWilms TumorApoptosisImmunohistochemistryMesodermMolecular Sequence DataZebrafishCell MovementBromodeoxyuridineEpidermisAlbinismCell Line, TumorRNA, MessengerLarvaCell CycleHomeodomain ProteinsAmino Acid SequenceReverse Transcriptase Polymerase Chain ReactionStem CellsMetamorphosis, BiologicalCellular MicroenvironmentTime FactorsGene ExpressionEmbryo, NonmammalianFibroblast Growth FactorsGene Expression RegulationLimb BudsHindlimbHeadAnimals, Genetically ModifiedAnaplasiaDenervationCell DedifferentiationBase SequenceParabiosisLymphocyte ActivationToesDNA, ComplementaryModels, BiologicalAmputation StumpsAnimal StructuresCell SurvivalPentosan Sulfuric PolyesterAmphibian ProteinsTenascinSkin Physiological ProcessesMice, Inbred C57BLTretinoinGene Expression ProfilingMicroscopy, ElectronCell LineZebrafish ProteinsT-Box Domain ProteinsSkin PigmentationKi-67 AntigenGenes, HomeoboxMelanophoresBlotting, WesternDermisExtracellular MatrixTranscription FactorsCartilageBody PatterningProliferating Cell Nuclear AntigenPhosphorylationT-LymphocytesMusclesRNA InterferenceCell LineageFlow CytometryTumor Cells, CulturedMice, KnockoutHedgehog ProteinsFluorescent Antibody Technique