Embryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryo ImplantationBlastocystEmbryonic DevelopmentEmbryo LossEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalFertilization in VitroCleavage Stage, OvumPregnancyBlastomeresEmbryo DispositionMorulaZygoteCryopreservationZebrafishGastrulaTime FactorsBody PatterningOocytesIn Situ HybridizationCulture TechniquesCloning, OrganismMorphogenesisEmbryo ResearchSingle Embryo TransferMesodermMolecular Sequence DataEctogenesisNuclear Transfer TechniquesPregnancy RateEctodermZebrafish ProteinsTreatment OutcomeSperm Injections, IntracytoplasmicBase SequenceSeedsXenopus ProteinsSurgical Procedures, OperativeHomeodomain ProteinsFetal ViabilityTranscription FactorsRNA, MessengerEndodermRetrospective StudiesParthenogenesisDrosophilaSea UrchinsEmbryonic InductionAmino Acid SequencePreimplantation DiagnosisSurgical Procedures, Minimally InvasiveBlastodermFertilizationMicroinjectionsDrosophila ProteinsCattleMutationCulture MediaAnimals, Genetically ModifiedCell DifferentiationPhenotypeMethodsNervous SystemPostoperative ComplicationsNotochordXenopus laevisSuperovulationXenopusYolk SacChimeraVascular Surgical ProceduresPregnancy OutcomeOvumSomitesDrosophila melanogasterNeural CrestMice, Inbred ICRSignal TransductionFallopian TubesCell NucleusCloning, MolecularAmbulatory Surgical ProceduresQuailDNA-Binding ProteinsModels, BiologicalCardiac Surgical ProceduresMice, Inbred StrainsGene ExpressionSpermatozoaFollow-Up StudiesTeratogensProspective StudiesCryoprotective AgentsVitrificationUrochordataUterusImmunohistochemistry