Preimplantation DiagnosisPregnancyEmbryo, MammalianEmbryo, NonmammalianEmbryo ImplantationChick EmbryoBlastocystEmbryonic DevelopmentBlastomeresEmbryo ResearchFertilization in VitroEmbryonic and Fetal DevelopmentEmbryo DispositionGene Expression Regulation, DevelopmentalCryopreservationEmbryo LossZygotePersonhoodMorulaBeginning of Human LifeCleavage Stage, OvumPregnancy RateCulture TechniquesEctogenesisOocytesSingle Embryo TransferCloning, OrganismSperm Injections, IntracytoplasmicEmbryo Culture TechniquesEmbryo TransferZebrafishIn Situ HybridizationMorphogenesisGastrulaMesodermEmbryologyMosaicismBody PatterningFetal ViabilityLifeValue of LifeIncubatorsResearch Embryo CreationAnatomy, ArtisticTheologyFertilizationYolk SacVitrificationGestational AgeEthylene GlycolNuclear Transfer TechniquesCryoprotective AgentsReproductive TechniquesPrenatal InjuriesEctodermPregnancy OutcomeMolecular Sequence DataHomeodomain ProteinsZebrafish ProteinsTrophoblastsTime FactorsCulture MediaAneuploidyRNA, MessengerFetal ResearchNotochordGerm LayersTranscription FactorsZona PellucidaCell DifferentiationXenopus ProteinsMoralsSeedsBase SequenceEndodermParthenogenesisFallopian TubesEmbryonic InductionHuman CharacteristicsBlastodermDrosophilaSea UrchinsEmbryonic Stem CellsDrosophila ProteinsCell NucleusGamete Intrafallopian TransferMutationFetusAnimals, Genetically ModifiedTotipotent Stem CellsAmino Acid SequenceEndometriumMicroinjectionsPhenotypeCell LineageImmunohistochemistryPropylene GlycolNervous SystemInfertility, FemaleXenopus laevis