Zygote Intrafallopian TransferEmbryo, MammalianZygoteEmbryo ImplantationBlastocystCryopreservationFertilization in VitroEmbryo TransferEmbryo, NonmammalianPregnancyFertilizationOocytesChick EmbryoEmbryonic DevelopmentSperm Injections, IntracytoplasmicBlastomeresEmbryo ResearchEmbryonic and Fetal DevelopmentEmbryo DispositionPersonhoodGene Expression Regulation, DevelopmentalBeginning of Human LifePregnancy RateEmbryo LossEmbryo Implantation, DelayedEmbryo Culture TechniquesMorulaCulture TechniquesCleavage Stage, OvumPreimplantation DiagnosisEctogenesisSingle Embryo TransferTime FactorsCloning, OrganismEndometriumLifeMosaicismTrophoblastsEmbryologyValue of LifeIn Situ HybridizationCochlear ImplantationIncubatorsFetal ViabilityAnatomy, ArtisticTheologyVitrificationPregnancy OutcomeReproductive TechniquesMesodermMorphogenesisGestational AgeUterusResearch Embryo CreationLens Implantation, IntraocularZebrafishPrenatal InjuriesEthylene GlycolCryoprotective AgentsGastrulaFetal ResearchBody PatterningYolk SacAneuploidyZona PellucidaRNA, MessengerMolecular Sequence DataMoralsCulture MediaGerm LayersHomeodomain ProteinsCell DifferentiationHuman CharacteristicsFallopian TubesEctodermImmunohistochemistryTreatment OutcomeGamete Intrafallopian TransferNuclear Transfer TechniquesNotochordBase SequencePacemaker, ArtificialFetusEmbryonic Stem CellsTranscription FactorsZebrafish ProteinsStentsEndodermProsthesis DesignTotipotent Stem CellsCell NucleusPropylene GlycolCatholicismChromosome AberrationsDeciduaXenopus ProteinsThiepinsCell LineageReproductive Techniques, AssistedMutation