Ambystoma mexicanumRegenerationExtremitiesTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensForelimbCell DifferentiationSalamandridaeAnimal FinsPlanariansTriturusTailGene Expression Regulation, DevelopmentalStem CellsCells, CulturedAmputationIn Situ HybridizationTretinoinSignal TransductionTranscription FactorsCell ProliferationUrodelaZebrafishMolecular Sequence DataCell LineageGene Expression RegulationHomeodomain ProteinsPleurodelesCell DivisionSex DifferentiationWilms TumorNerve TissueRNA, MessengerCell LineEmbryonic Stem CellsEpidermisMesodermMorphogenesisBase SequenceImmunohistochemistryGene ExpressionReverse Transcriptase Polymerase Chain ReactionCell DedifferentiationAmino Acid SequenceZebrafish ProteinsDNA-Binding ProteinsCartilageWound HealingFibroblast Growth FactorsAnaplasiaModels, BiologicalOsteogenesisOsteoblastsGene Expression ProfilingGenes, HomeoboxAntigens, DifferentiationMice, Inbred C57BLBody PatterningPhenotypeMultipotent Stem CellsTrans-ActivatorsAnimals, Genetically ModifiedTime FactorsMesenchymal Stromal CellsAdipogenesisAmputation StumpsMice, KnockoutAnimal StructuresEmbryo, NonmammalianMice, TransgenicDNA PrimersPentosan Sulfuric PolyesterMyoblastsT-Box Domain ProteinsNeuronsTranscription, GeneticCell Culture TechniquesHedgehog ProteinsDermisBromodeoxyuridineMuscle DevelopmentDNA, ComplementaryWnt ProteinsHematopoietic Stem CellsAdipocytesBone Marrow CellsXenopus ProteinsKeratinsKeratinocytesTumor Cells, CulturedEmbryo, MammalianBasic Helix-Loop-Helix Transcription FactorsApoptosisFluorescent Antibody TechniqueCellular MicroenvironmentDimethyl SulfoxideMusclesPromoter Regions, Genetic