Ambystoma mexicanumRegenerationExtremitiesTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensForelimbMammalsCell ProliferationSalamandridaeAnimal FinsPlanariansTriturusTailCell DifferentiationAmputationSignal TransductionCells, CulturedCell DivisionUrodelaIn Situ HybridizationZebrafishPleurodelesApoptosisWilms TumorMolecular Sequence DataGene Expression Regulation, DevelopmentalNerve TissueBromodeoxyuridineImmunohistochemistryCell Line, TumorWound HealingRNA, MessengerCell CycleStem CellsAmino Acid SequenceCell MovementGene Expression RegulationMorphogenesisGene ExpressionReverse Transcriptase Polymerase Chain ReactionEpidermisAnaplasiaBase SequenceCell DedifferentiationLymphocyte ActivationHomeodomain ProteinsMice, Inbred C57BLMesodermModels, BiologicalAnimals, Genetically ModifiedTime FactorsCell LineZebrafish ProteinsCell SurvivalAnimal StructuresFibroblast Growth FactorsAmputation StumpsPentosan Sulfuric PolyesterTranscription FactorsTretinoinBlotting, WesternGenes, HomeoboxKi-67 AntigenDermisRNA InterferenceBody PatterningPhosphorylationMice, KnockoutCartilageProliferating Cell Nuclear AntigenT-LymphocytesGene Expression ProfilingFlow CytometryMice, TransgenicDNA, ComplementaryHedgehog ProteinsTumor Cells, CulturedDNA PrimersRNA, Small InterferingEmbryo, NonmammalianDose-Response Relationship, DrugLarvaDown-RegulationFibroblastsEpithelial CellsGene Expression Regulation, NeoplasticMSX1 Transcription Factorbeta CateninXenopus ProteinsTransfectionLimb BudsCellular MicroenvironmentCell Growth ProcessesMultipotent Stem CellsXenopus laevisPAX7 Transcription FactorWnt ProteinsCell Count