Embryo, MammalianEmbryo ImplantationBlastocystBlastomeresEmbryo ResearchEmbryonic DevelopmentClone CellsEmbryo, NonmammalianFertilization in VitroChick EmbryoEmbryonic and Fetal DevelopmentPersonhoodBeginning of Human LifePregnancyCloning, MolecularMolecular Sequence DataEmbryo DispositionCryopreservationBase SequenceEmbryo Culture TechniquesEmbryo TransferAmino Acid SequenceGene Expression Regulation, DevelopmentalCloning, OrganismPregnancy RateZygoteLifePreimplantation DiagnosisCulture TechniquesValue of LifeMosaicismAnatomy, ArtisticTheologyEctogenesisMorulaEmbryologyIncubatorsOocytesSperm Injections, IntracytoplasmicSingle Embryo TransferRNA, MessengerFetal ResearchPrenatal InjuriesResearch Embryo CreationDNA, ComplementaryEthylene GlycolEmbryo LossCell LineFetal ViabilityGestational AgeMoralsTime FactorsVitrificationReproductive TechniquesCryoprotective AgentsHuman CharacteristicsDNAAneuploidySequence Homology, Amino AcidIn Situ HybridizationTrophoblastsCleavage Stage, OvumMutationCulture MediaGamete Intrafallopian TransferPregnancy OutcomeYolk SacMesodermFetusMorphogenesisPolymerase Chain ReactionGene ExpressionFertilizationGerm LayersNucleic Acid HybridizationZona PellucidaCell DifferentiationCatholicismThiepinsSequence Analysis, DNATotipotent Stem CellsNontherapeutic Human ExperimentationPhenotypeChromosome AberrationsTranscription, GeneticEmbryonic Stem CellsZebrafishEastern OrthodoxyTranscription FactorsEndometriumPropylene GlycolIn Situ Hybridization, FluorescencePlasmidsSequence Homology, Nucleic AcidReproductive Techniques, AssistedImmunohistochemistryCell NucleusHomeodomain ProteinsNuclear Transfer TechniquesSequence Alignment