Adult Stem CellsStem CellsStem Cell TransplantationEmbryonic Stem CellsHematopoietic Stem CellsEmbryo, MammalianCell DifferentiationPluripotent Stem CellsMultipotent Stem CellsStem Cell NicheMesenchymal Stromal CellsCell LineageInduced Pluripotent Stem CellsHematopoietic Stem Cell TransplantationNeural Stem CellsMesenchymal Stem Cell TransplantationBlastocystEmbryo ResearchRegenerationPlanariansEmbryo ImplantationStem Cell ResearchBlastomeresEmbryonic DevelopmentCells, CulturedRegenerative MedicineCell Culture TechniquesCell ProliferationStem Cell FactorOctamer Transcription Factor-3Gene Expression Regulation, DevelopmentalFetal Stem CellsEmbryo, NonmammalianBone Marrow CellsNeoplastic Stem CellsCell SeparationCell- and Tissue-Based TherapyFertilization in VitroChick EmbryoEmbryonic and Fetal DevelopmentPlant StemsPregnancySignal TransductionEmbryo Culture TechniquesPersonhoodTissue EngineeringGerm CellsCell LineCryopreservationBeginning of Human LifeTotipotent Stem CellsModels, BiologicalMice, Inbred C57BLSpermatogoniaHair FollicleFlow CytometryEmbryo DispositionMolecular Sequence DataHematopoietic Stem Cell MobilizationPhenotypeGene Expression ProfilingBase SequenceTime FactorsCell DedifferentiationSOXB1 Transcription FactorsImmunohistochemistryCoculture TechniquesAging, PrematureTranscription FactorsHomeodomain ProteinsBiological MarkersGreen Fluorescent ProteinsTransplantation, AutologousChondrogenesisDental PulpCell DivisionReverse Transcriptase Polymerase Chain ReactionCell AgingHematopoiesisCell TransplantationGene Expression RegulationAntigens, CD34Embryo TransferCloning, OrganismNuclear ReprogrammingMesodermNestinColony-Forming Units AssayRNA, MessengerMice, TransgenicGene ExpressionGerm LayersCell SurvivalCloning, MolecularCulture MediaZygoteStromal CellsLentivirusCell CountNeurons