Adult Stem CellsStem CellsStem Cell TransplantationEmbryonic Stem CellsHematopoietic Stem CellsEmbryo, MammalianCell DifferentiationPluripotent Stem CellsCloning, MolecularMultipotent Stem CellsStem Cell NicheMesenchymal Stromal CellsCell LineageInduced Pluripotent Stem CellsHematopoietic Stem Cell TransplantationNeural Stem CellsMesenchymal Stem Cell TransplantationBlastocystEmbryo ResearchRegenerationPlanariansEmbryo ImplantationStem Cell ResearchBlastomeresEmbryonic DevelopmentCells, CulturedCell Culture TechniquesRegenerative MedicineCell ProliferationStem Cell FactorGene Expression Regulation, DevelopmentalMolecular Sequence DataOctamer Transcription Factor-3Embryo, NonmammalianFetal Stem CellsBone Marrow CellsBase SequenceNeoplastic Stem CellsCell SeparationFertilization in VitroCell- and Tissue-Based TherapyChick EmbryoEmbryonic and Fetal DevelopmentPlant StemsPregnancyCell LineEmbryo Culture TechniquesAmino Acid SequenceSignal TransductionPersonhoodCloning, OrganismTissue EngineeringGerm CellsCryopreservationBeginning of Human LifeTotipotent Stem CellsMice, Inbred C57BLSpermatogoniaModels, BiologicalHair FollicleFlow CytometryPhenotypeEmbryo DispositionHematopoietic Stem Cell MobilizationGene Expression ProfilingTranscription FactorsRNA, MessengerCell DedifferentiationImmunohistochemistrySOXB1 Transcription FactorsReverse Transcriptase Polymerase Chain ReactionHomeodomain ProteinsTime FactorsCoculture TechniquesAging, PrematureGene ExpressionGene Expression RegulationBiological MarkersCell DivisionTransplantation, AutologousChondrogenesisDental PulpCell AgingHematopoiesisCell TransplantationGreen Fluorescent ProteinsEmbryo TransferAntigens, CD34Nuclear ReprogrammingMesodermNestinColony-Forming Units AssayMice, TransgenicGerm LayersDNA, ComplementaryCulture MediaCell SurvivalZygoteLentivirusStromal Cells