Twins, MonozygoticDiseases in TwinsTwinsBiometric IdentificationTwins, DizygoticEmbryo, MammalianDermatoglyphicsTwin Studies as TopicEunuchismPregnancyEmbryo ImplantationTwins, ConjoinedEmbryo, NonmammalianBlastocystChick EmbryoEmbryonic DevelopmentBlastomeresCombat DisordersEmbryo ResearchTransplantation, IsogeneicFertilization in VitroEmbryonic and Fetal DevelopmentClone CellsDiabetes Mellitus, Type 1Embryo DispositionCryopreservationPersonhoodBeginning of Human LifeGene Expression Regulation, DevelopmentalZygotePregnancy, TwinEmbryo TransferEmbryo LossPregnancy RateMorulaEmbryo Culture TechniquesCulture TechniquesPedigreePreimplantation DiagnosisBone Marrow TransplantationEctogenesisSingle Embryo TransferCleavage Stage, OvumSperm Injections, IntracytoplasmicCloning, OrganismMolecular Sequence DataOocytesMosaicismLifeEmbryologyValue of LifeBase SequenceGestational AgeIncubatorsAnatomy, ArtisticTheologyFetal ViabilityIn Situ HybridizationPregnancy OutcomeMesodermMorphogenesisResearch Embryo CreationPregnancy, MultipleZebrafishAmino Acid SequencePrenatal InjuriesReproductive TechniquesEthylene GlycolCloning, MolecularGastrulaFetal ResearchRNA, MessengerVitrificationCryoprotective AgentsBody PatterningYolk SacFertilizationAneuploidyTrophoblastsTime FactorsMoralsCulture MediaHuman CharacteristicsGerm LayersHomeodomain ProteinsCell DifferentiationPhenotypeZona PellucidaFetusNuclear Transfer TechniquesNotochordCell LineDNA, ComplementaryTranscription FactorsGamete Intrafallopian TransferEctodermZebrafish ProteinsMutationEmbryonic Stem CellsDNA