Embryo, MammalianStem CellsGerm CellsBlastocystEmbryonic Stem CellsEmbryo ImplantationPluripotent Stem CellsEmbryo ResearchBlastomeresGerm LayersEmbryonic DevelopmentCell DifferentiationEmbryo, NonmammalianFertilization in VitroStem Cell TransplantationChick EmbryoEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalPregnancyPersonhoodOctamer Transcription Factor-3Cell LineageBeginning of Human LifeCryopreservationInduced Pluripotent Stem CellsEmbryo Culture TechniquesHematopoietic Stem CellsEmbryo DispositionTeratomaCell Culture TechniquesAdult Stem CellsEmbryo TransferStage-Specific Embryonic AntigensZygoteEmbryoid BodiesCells, CulturedPregnancy RateCell LineMesodermCulture TechniquesPreimplantation DiagnosisLifeKaryotypingHematopoietic Stem Cell TransplantationValue of LifeCloning, OrganismStem Cell NicheMosaicismChimeraMorulaNeural Stem CellsParthenogenesisGonadsAnatomy, ArtisticTheologyEctogenesisMolecular Sequence DataEmbryologyOocytesIncubatorsTotipotent Stem CellsSperm Injections, IntracytoplasmicGenomic ImprintingMultipotent Stem CellsTranscription FactorsTestisBase SequenceResearch Embryo CreationEndodermSingle Embryo TransferFetal ResearchMesenchymal Stem Cell TransplantationBiological MarkersPrenatal InjuriesMesenchymal Stromal CellsGene Expression ProfilingEthylene GlycolStem Cell FactorEmbryo LossGestational AgeNeoplasms, Germ Cell and EmbryonalTime FactorsTrophoblastsMoralsFetal ViabilityRNA, MessengerCryoprotective AgentsCulture MediaReproductive TechniquesCloning, MolecularVitrificationIn Situ HybridizationFetusAneuploidyHomeodomain ProteinsAmino Acid SequenceHuman CharacteristicsImmunohistochemistryYolk SacCleavage Stage, Ovum