Organizers, EmbryonicNucleolus Organizer RegionStem CellsGoosecoid ProteinHematopoietic Stem CellsStem Cell TransplantationEmbryonic Stem CellsBody PatterningEmbryonic InductionAdult Stem CellsGastrulaXenopus ProteinsPluripotent Stem CellsSilver StainingGene Expression Regulation, DevelopmentalHematopoietic Stem Cell TransplantationStem Cell NicheCell DifferentiationHomeodomain ProteinsEmbryologyNeural Stem CellsInduced Pluripotent Stem CellsOtx Transcription FactorsEmbryo, NonmammalianMesodermZebrafish ProteinsMultipotent Stem CellsMesenchymal Stem Cell TransplantationXenopusCell LineageStem Cell FactorMesenchymal Stromal CellsFibroblast Growth Factor 8Wnt ProteinsNodal ProteinHydraIntercellular Signaling Peptides and ProteinsRhombencephalonBone Morphogenetic ProteinsSignal TransductionNotochordIn Situ HybridizationZebrafishMesencephalonEctodermAxisNodal Signaling LigandsTranscription FactorsHeadStem Cell ResearchXenopus laevisTissue TransplantationNervous SystemPlant StemsLIM-Homeodomain ProteinsMorphogenesisFetal Stem CellsCells, CulturedCell ProliferationEndodermRegenerationSilverActivinsCell NucleolusWnt1 ProteinGenes, HomeoboxHematopoietic Stem Cell MobilizationGlycoproteinsLeft-Right Determination FactorsNeoplastic Stem CellsSOXB1 Transcription FactorsBone Morphogenetic Protein 4Bone Marrow CellsMolecular Sequence DataEmbryo, Mammalianbeta CateninModels, BiologicalProteinsFibroblast Growth FactorsMetencephalonOctamer Transcription Factor-3Fetal ProteinsRepressor ProteinsBlastulaT-Box Domain ProteinsCell Culture TechniquesNerve Tissue ProteinsPhenotypeTransforming Growth Factor betaMice, Inbred C57BLRegenerative MedicineCell SeparationRNA, MessengerTransplantation, AutologousHematopoiesisCell LineChick EmbryoPeripheral Blood Stem Cell TransplantationTwins, ConjoinedDNA-Binding Proteins