Cloning, OrganismEmbryo, MammalianStem CellsBlastocystEmbryo ImplantationEmbryo ResearchCloning, MolecularBlastomeresEmbryonic DevelopmentEmbryonic Stem CellsEmbryo, NonmammalianFertilization in VitroChick EmbryoEmbryonic and Fetal DevelopmentPersonhoodStem Cell TransplantationBeginning of Human LifePregnancyPluripotent Stem CellsCryopreservationEmbryo Culture TechniquesHematopoietic Stem CellsEmbryo DispositionAdult Stem CellsCell DifferentiationEmbryo TransferGene Expression Regulation, DevelopmentalMolecular Sequence DataBase SequenceInduced Pluripotent Stem CellsZygotePregnancy RateAmino Acid SequenceCulture TechniquesPreimplantation DiagnosisLifeHematopoietic Stem Cell TransplantationValue of LifeCell LineageStem Cell NicheEmbryologyMorulaMosaicismNeural Stem CellsAnatomy, ArtisticTheologyEctogenesisIncubatorsOocytesTotipotent Stem CellsSperm Injections, IntracytoplasmicMultipotent Stem CellsResearch Embryo CreationSingle Embryo TransferCell LineCells, CulturedFetal ResearchGerm LayersMesenchymal Stem Cell TransplantationPrenatal InjuriesRNA, MessengerOctamer Transcription Factor-3Mesenchymal Stromal CellsEthylene GlycolEmbryo LossTime FactorsMoralsStem Cell FactorGestational AgeCell Culture TechniquesDNA, ComplementaryTrophoblastsMesodermFetal ViabilityCulture MediaScienceCryoprotective AgentsReproductive TechniquesVitrificationIn Situ HybridizationAneuploidyFetusHuman CharacteristicsHomeodomain ProteinsYolk SacStem Cell ResearchSequence Homology, Amino AcidGene ExpressionTranscription FactorsCleavage Stage, OvumPhenotypeImmunohistochemistryGamete Intrafallopian TransferModels, BiologicalMorphogenesisPregnancy OutcomeMutationSignal TransductionCoculture TechniquesFertilization