Embryo, MammalianEmbryo ImplantationBlastocystBlastomeresEmbryo ResearchEmbryonic DevelopmentFertilization in VitroEmbryo TransferEmbryo, NonmammalianPregnancyEmbryonic and Fetal DevelopmentChick EmbryoPersonhoodCryopreservationBeginning of Human LifeEmbryo DispositionEmbryo Culture TechniquesPregnancy RateEmbryo Implantation, DelayedGene Transfer TechniquesZygoteSperm Injections, IntracytoplasmicPreimplantation DiagnosisGene Expression Regulation, DevelopmentalCulture TechniquesSingle Embryo TransferLifeEndometriumMorulaCochlear ImplantationTime FactorsValue of LifeEctogenesisMosaicismAnatomy, ArtisticTrophoblastsIncubatorsTheologyEmbryo LossCloning, OrganismEmbryologyOocytesLens Implantation, IntraocularCleavage Stage, OvumPregnancy OutcomeVitrificationGene Transfer, HorizontalReproductive TechniquesFetal ResearchPrenatal InjuriesFetal ViabilityUterusGestational AgeResearch Embryo CreationEthylene GlycolCryoprotective AgentsGamete Intrafallopian TransferMoralsAneuploidyMolecular Sequence DataHuman CharacteristicsZona PellucidaNuclear Transfer TechniquesIn Situ HybridizationFertilizationPacemaker, ArtificialTreatment OutcomeYolk SacCulture MediaFetusStentsProsthesis DesignReproductive Techniques, AssistedMesodermGerm LayersRNA, MessengerMorphogenesisImmunohistochemistryTransfer (Psychology)Fallopian TubesCatholicismCell DifferentiationBase SequenceTotipotent Stem CellsEmbryonic Stem CellsThiepinsNontherapeutic Human ExperimentationCell LineProstheses and ImplantsEastern OrthodoxyChromosome AberrationsPropylene GlycolDeciduaAortic Valve StenosisFluorescence Resonance Energy TransferCells, CulturedRetrospective StudiesCell NucleusAmino Acid SequenceZebrafish