Embryonic Stem CellsRegenerationAmbystoma mexicanumExtremitiesStem CellsTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensCell DifferentiationPluripotent Stem CellsForelimbStem Cell TransplantationEmbryo, MammalianOctamer Transcription Factor-3Hematopoietic Stem CellsInduced Pluripotent Stem CellsCell LineageCell Culture TechniquesAdult Stem CellsGene Expression Regulation, DevelopmentalCells, CulturedSalamandridaeCell LineEmbryoid BodiesNeural Stem CellsEmbryo ResearchMultipotent Stem CellsSOXB1 Transcription FactorsHomeodomain ProteinsTeratomaCell ProliferationStem Cell NicheHematopoietic Stem Cell TransplantationTotipotent Stem CellsPlanariansGene Expression ProfilingGerm LayersMesenchymal Stromal CellsAnimal FinsMesenchymal Stem Cell TransplantationTranscription FactorsEndodermLeukemia Inhibitory FactorReverse Transcriptase Polymerase Chain ReactionStem Cell ResearchChimeraSignal TransductionGene TargetingStem Cell FactorGene Expression RegulationCell DedifferentiationBlastocystStage-Specific Embryonic AntigensNuclear ReprogrammingFeeder CellsTriturusMice, Inbred C57BLFlow CytometryGene ExpressionRegenerative MedicineTretinoinBiological MarkersModels, BiologicalCell SeparationMesodermGreen Fluorescent ProteinsBone Morphogenetic Protein 4TailCoculture TechniquesHematopoiesisNeuronsImmunohistochemistryMyocytes, CardiacGerm CellsEnergy MetabolismMolecular Sequence DataRNA, MessengerFetal Stem CellsEpigenesis, GeneticBase SequencePhenotypeLipid MetabolismTime FactorsEmbryonic DevelopmentMice, SCIDCell SurvivalOligonucleotide Array Sequence AnalysisMice, TransgenicActivinsMice, KnockoutNeoplastic Stem CellsPlant StemsKaryotypingIn Situ HybridizationDNA-Binding ProteinsAmputationCloning, OrganismCell TransplantationFibroblasts