BlastocystEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryonic DevelopmentEmbryo ImplantationEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalPregnancyCleavage Stage, OvumEmbryo LossBlastomeresFertilization in VitroMorulaEmbryo Implantation, DelayedZygoteIn Situ HybridizationGastrulaBody PatterningCryopreservationCulture TechniquesEndodermMesodermEctogenesisTime FactorsMorphogenesisEctodermCochlear ImplantationOocytesUterusEmbryo DispositionZebrafishMice, Inbred ICRPregnancy RateMice, Inbred StrainsLens Implantation, IntraocularHomeodomain ProteinsMolecular Sequence DataCloning, OrganismFetal ViabilityRNA, MessengerTrophoblastsCell DifferentiationTranscription FactorsNuclear Transfer TechniquesSingle Embryo TransferBase SequenceSperm Injections, IntracytoplasmicEndometriumEmbryo TransferParthenogenesisMice, Inbred C57BLEmbryo ResearchYolk SacZebrafish ProteinsChimeraSomitesTreatment OutcomeEmbryo Culture TechniquesEmbryonic InductionFertilizationPacemaker, ArtificialGerm LayersMutationImmunohistochemistrySignal TransductionPhenotypeCell LineageSuperovulationMice, Inbred CBAStentsXenopus ProteinsDNA-Binding ProteinsNervous SystemAmino Acid SequenceMicroinjectionsGestational AgeDeciduaProsthesis DesignMice, TransgenicNodal ProteinMice, Mutant StrainsNeural CrestFallopian TubesMice, KnockoutGene ExpressionGenes, LethalCulture MediaNotochordBlastocyst Inner Cell MassDrosophilaDrosophila ProteinsPreimplantation DiagnosisSeedsVitrificationTeratogensCell DivisionPregnancy OutcomeZona PellucidaReverse Transcriptase Polymerase Chain Reaction