Stem CellsOocytesEmbryo, MammalianEmbryonic Stem CellsBlastocystEmbryo ImplantationStem Cell TransplantationEmbryo ResearchEmbryonic DevelopmentHematopoietic Stem CellsBlastomeresPluripotent Stem CellsAdult Stem CellsEmbryo, NonmammalianCell DifferentiationInduced Pluripotent Stem CellsEmbryonic and Fetal DevelopmentFertilization in VitroCryopreservationEmbryo Culture TechniquesPregnancyChick EmbryoHematopoietic Stem Cell TransplantationStem Cell NicheNeural Stem CellsPersonhoodEmbryo TransferGene Expression Regulation, DevelopmentalBeginning of Human LifeCell LineageMultipotent Stem CellsEmbryo DispositionMesenchymal Stem Cell TransplantationMolecular Sequence DataZygoteCells, CulturedMesenchymal Stromal CellsStem Cell FactorOogenesisBase SequenceCell Culture TechniquesPregnancy RateSperm Injections, IntracytoplasmicCloning, MolecularOocyte DonationCloning, OrganismMorulaTotipotent Stem CellsOctamer Transcription Factor-3Xenopus laevisCulture TechniquesCell LineAmino Acid SequencePreimplantation DiagnosisFertilizationRNA, MessengerTime FactorsStem Cell ResearchEctogenesisValue of LifeLifeGerm LayersMosaicismMeiosisPlant StemsParthenogenesisOocyte RetrievalCulture MediaFetal Stem CellsCryoprotective AgentsCleavage Stage, OvumXenopusAnatomy, ArtisticCell ProliferationTheologyVitrificationEthylene GlycolIncubatorsResearch Embryo CreationEmbryologyImmunohistochemistryModels, BiologicalNuclear Transfer TechniquesSignal TransductionHomeodomain ProteinsZona PellucidaMice, Inbred C57BLPhenotypeTranscription FactorsIn Vitro Oocyte Maturation TechniquesCoculture TechniquesGene ExpressionSingle Embryo TransferCell SeparationMicroinjectionsGerm CellsMesodermHematopoietic Stem Cell MobilizationAneuploidyReproductive Techniques