Plant Somatic Embryogenesis TechniquesSeedsGerminationEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryo ImplantationBlastocystEmbryonic DevelopmentEmbryo LossEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalFertilization in VitroCleavage Stage, OvumBlastomeresPregnancyEmbryo DispositionMorulaZygoteZebrafishCryopreservationGastrulaBody PatterningIn Situ HybridizationOocytesEmbryo ResearchMorphogenesisSingle Embryo TransferCloning, OrganismCulture TechniquesMesodermEctogenesisNuclear Transfer TechniquesEctodermZebrafish ProteinsPregnancy RateMolecular Sequence DataSperm Injections, IntracytoplasmicXenopus ProteinsHomeodomain ProteinsFetal ViabilityEndodermTranscription FactorsParthenogenesisEmbryonic InductionBlastodermDrosophilaSea UrchinsDrosophila ProteinsRNA, MessengerFertilizationPreimplantation DiagnosisBase SequenceAnimals, Genetically ModifiedMicroinjectionsCell DifferentiationNotochordNervous SystemYolk SacXenopus laevisTime FactorsSuperovulationXenopusChimeraAmino Acid SequenceMutationPhenotypeSomitesNeural CrestOvumDrosophila melanogasterPregnancy OutcomeSignal TransductionCulture MediaMice, Inbred ICRQuailCattleUrochordataFallopian TubesTeratogensDNA-Binding ProteinsEmbryo Implantation, DelayedCell NucleusGenes, LethalCell LineageGastrulationCoturnixMice, Inbred StrainsVitrificationZona PellucidaEmbryologyGerm LayersGene ExpressionGenes, HomeoboxGerm CellsUterusPregnancy, MultipleGestational AgeFetal DeathNodal Protein