Embryo, MammalianEmbryo ImplantationBlastocystBlastomeresEmbryo ResearchEmbryonic DevelopmentFertilization in VitroEmbryo, NonmammalianPregnancyEmbryonic and Fetal DevelopmentChick EmbryoPersonhoodEmbryo TransferBeginning of Human LifeCryopreservationEmbryo DispositionEmbryo Culture TechniquesPregnancy RateEmbryo Implantation, DelayedZygoteGene Expression Regulation, DevelopmentalPreimplantation DiagnosisCulture TechniquesSperm Injections, IntracytoplasmicLifeEndometriumCochlear ImplantationValue of LifeEctogenesisMorulaMosaicismAnatomy, ArtisticTheologyTime FactorsTrophoblastsEmbryo LossIncubatorsSingle Embryo TransferEmbryologyLens Implantation, IntraocularOocytesCloning, OrganismFetal ResearchPrenatal InjuriesVitrificationReproductive TechniquesCleavage Stage, OvumGestational AgeUterusFetal ViabilityResearch Embryo CreationEthylene GlycolPregnancy OutcomeCryoprotective AgentsMoralsAneuploidyHuman CharacteristicsIn Situ HybridizationPacemaker, ArtificialZona PellucidaGamete Intrafallopian TransferFertilizationYolk SacStentsTreatment OutcomeProsthesis DesignMesodermFetusGerm LayersMorphogenesisCulture MediaRNA, MessengerImmunohistochemistryMolecular Sequence DataReproductive Techniques, AssistedCatholicismFallopian TubesThiepinsNontherapeutic Human ExperimentationEmbryonic Stem CellsTotipotent Stem CellsCell DifferentiationEastern OrthodoxyChromosome AberrationsProstheses and ImplantsDeciduaPropylene GlycolAortic Valve StenosisZebrafishNotochordHomeodomain ProteinsBones of Upper ExtremityCell LineDrug-Eluting StentsDefibrillators, ImplantableBase SequenceGastrulaRetrospective StudiesElectrodes, ImplantedLenses, Intraocular