Clone CellsEmbryo, MammalianEmbryo ImplantationBlastocystBlastomeresEmbryo ResearchEmbryonic DevelopmentEmbryo, NonmammalianFertilization in VitroChick EmbryoEmbryonic and Fetal DevelopmentPersonhoodBeginning of Human LifePregnancyEmbryo DispositionCryopreservationMolecular Sequence DataEmbryo Culture TechniquesEmbryo TransferBase SequenceCloning, MolecularPregnancy RateGene Expression Regulation, DevelopmentalZygoteAmino Acid SequenceLifePreimplantation DiagnosisCulture TechniquesMosaicismValue of LifeAnatomy, ArtisticTheologyEctogenesisMorulaEmbryologyIncubatorsCloning, OrganismSperm Injections, IntracytoplasmicSingle Embryo TransferOocytesFetal ResearchPrenatal InjuriesDNA, ComplementaryRNA, MessengerResearch Embryo CreationEthylene GlycolCell LineEmbryo LossDNAMoralsGestational AgeFetal ViabilityReproductive TechniquesCryoprotective AgentsVitrificationAneuploidyHuman CharacteristicsTrophoblastsCleavage Stage, OvumIn Situ HybridizationGamete Intrafallopian TransferCulture MediaPregnancy OutcomeYolk SacMesodermMorphogenesisFetusNucleic Acid HybridizationTime FactorsGerm LayersCell DifferentiationFertilizationCatholicismPolymerase Chain ReactionChromosome AberrationsZona PellucidaThiepinsTotipotent Stem CellsNontherapeutic Human ExperimentationMutationIn Situ Hybridization, FluorescenceEmbryonic Stem CellsPhenotypeEastern OrthodoxyGene ExpressionSequence Analysis, DNAEndometriumPropylene GlycolZebrafishSequence Homology, Amino AcidSequence Homology, Nucleic AcidReproductive Techniques, AssistedBones of Upper ExtremityTranscription, GeneticNotochordHomeodomain ProteinsTranscription FactorsGastrulaCell NucleusCell Division