Embryonic Stem CellsRegenerationAmbystoma mexicanumExtremitiesStem CellsTurbellariaNotophthalmusAmbystomaNotophthalmus viridescensCell DifferentiationPluripotent Stem CellsForelimbStem Cell TransplantationEmbryo, MammalianOctamer Transcription Factor-3Hematopoietic Stem CellsMesodermCell LineageInduced Pluripotent Stem CellsCell Culture TechniquesGene Expression Regulation, DevelopmentalAdult Stem CellsCells, CulturedSalamandridaeMesenchymal Stromal CellsCell LineMultipotent Stem CellsEmbryoid BodiesNeural Stem CellsHomeodomain ProteinsEmbryo ResearchCell ProliferationSOXB1 Transcription FactorsStem Cell NicheTeratomaHematopoietic Stem Cell TransplantationTotipotent Stem CellsPlanariansMesenchymal Stem Cell TransplantationTranscription FactorsSignal TransductionEndodermGene Expression ProfilingGerm LayersReverse Transcriptase Polymerase Chain ReactionAnimal FinsChimeraLeukemia Inhibitory FactorStem Cell ResearchImmunohistochemistryGene TargetingGene Expression RegulationStem Cell FactorBone Morphogenetic Protein 4Cell DedifferentiationBlastocystIn Situ HybridizationStage-Specific Embryonic AntigensCoculture TechniquesNuclear ReprogrammingGene ExpressionFlow CytometryMice, Inbred C57BLCell SeparationTretinoinFeeder CellsTriturusBiological MarkersGreen Fluorescent ProteinsFibroblastsRegenerative MedicineRNA, MessengerHematopoiesisTailPhenotypeEmbryonic DevelopmentMorphogenesisModels, BiologicalMice, TransgenicBase SequenceNeuronsBone Morphogenetic ProteinsGerm CellsMyocytes, CardiacMolecular Sequence DataWnt ProteinsChondrogenesisFetal Stem CellsCartilageMice, SCIDCell DivisionEpigenesis, GeneticCell SurvivalTime FactorsMice, KnockoutBone Marrow CellsDNA-Binding ProteinsTissue EngineeringActivinsOligonucleotide Array Sequence Analysis