Embryo ResearchCloning, OrganismEmbryo, MammalianEmbryo ImplantationBlastocystBlastomeresEmbryonic DevelopmentEmbryo, NonmammalianClone CellsFertilization in VitroChick EmbryoEmbryonic and Fetal DevelopmentPersonhoodBeginning of Human LifePregnancyEmbryo DispositionCryopreservationEmbryo Culture TechniquesEmbryo TransferPregnancy RateZygoteGene Expression Regulation, DevelopmentalLifePreimplantation DiagnosisCulture TechniquesValue of LifeMosaicismAnatomy, ArtisticTheologyEctogenesisMorulaEmbryologyIncubatorsMolecular Sequence DataSperm Injections, IntracytoplasmicSingle Embryo TransferBase SequenceFetal ResearchOocytesPrenatal InjuriesResearch Embryo CreationEthylene GlycolEmbryo LossCloning, MolecularMoralsFetal ViabilityGestational AgeReproductive TechniquesCryoprotective AgentsVitrificationAmino Acid SequenceHuman CharacteristicsAneuploidyCleavage Stage, OvumTrophoblastsGamete Intrafallopian TransferRNA, MessengerPregnancy OutcomeYolk SacIn Situ HybridizationMesodermCulture MediaMorphogenesisGerm LayersCell LineFetusCatholicismFertilizationZona PellucidaThiepinsTotipotent Stem CellsNontherapeutic Human ExperimentationDNA, ComplementaryTime FactorsChromosome AberrationsEmbryonic Stem CellsEastern OrthodoxyCell DifferentiationDNAPropylene GlycolEndometriumZebrafishReproductive Techniques, AssistedBones of Upper ExtremityNotochordIn Situ Hybridization, FluorescenceGastrulaHomeodomain ProteinsFallopian TubesBody PatterningCell NucleusPhilosophy, MedicalMutationTranscription FactorsImmunohistochemistryPhenotypeGene ExpressionTissue SurvivalInfertility, FemaleCell Lineage