Stem CellsEmbryo, MammalianEmbryonic Stem CellsFetusStem Cell TransplantationHematopoietic Stem CellsCloning, MolecularAdult Stem CellsPluripotent Stem CellsBlastocystEmbryo, NonmammalianEmbryo ImplantationCell DifferentiationChick EmbryoHematopoietic Stem Cell TransplantationEmbryo ResearchInduced Pluripotent Stem CellsEmbryonic DevelopmentStem Cell NicheNeural Stem CellsBlastomeresPregnancyMultipotent Stem CellsMesenchymal Stem Cell TransplantationEmbryonic and Fetal DevelopmentCell LineageMesenchymal Stromal CellsFertilization in VitroGene Expression Regulation, DevelopmentalStem Cell FactorMolecular Sequence DataBase SequenceCloning, OrganismCryopreservationCells, CulturedStem Cell ResearchAmino Acid SequenceEmbryo DispositionPersonhoodPlant StemsOctamer Transcription Factor-3Fetal Stem CellsEmbryo Culture TechniquesCell Culture TechniquesBeginning of Human LifeTotipotent Stem CellsCell ProliferationCell LineZygoteHematopoietic Stem Cell MobilizationRNA, MessengerGestational AgeNeoplastic Stem CellsBone Marrow CellsMorulaEmbryo LossHomeodomain ProteinsTime FactorsPhenotypeMice, Inbred C57BLTranscription FactorsSignal TransductionCulture TechniquesEmbryo TransferCell SeparationRegenerationGene ExpressionOocytesHematopoiesisMesodermGerm LayersImmunohistochemistryPregnancy RateDNA, ComplementaryRegenerative MedicineModels, BiologicalIn Situ HybridizationPreimplantation DiagnosisSequence Homology, Amino AcidGene Expression ProfilingFlow CytometryGerm CellsReverse Transcriptase Polymerase Chain ReactionEctogenesisCleavage Stage, OvumCoculture TechniquesCell DivisionMutationMosaicismTransplantation, AutologousResearch Embryo CreationGene Expression RegulationCulture MediaPeripheral Blood Stem Cell TransplantationAntigens, CD34Value of LifeCampylobacter fetusSperm Injections, IntracytoplasmicSingle Embryo TransferBiological Markers