Cloning, MolecularEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryo ImplantationMolecular Sequence DataBlastocystBase SequenceAmino Acid SequenceEmbryonic DevelopmentCloning, OrganismGene Expression Regulation, DevelopmentalDNA, ComplementarySequence Homology, Amino AcidEmbryonic and Fetal DevelopmentEmbryo LossFertilization in VitroCleavage Stage, OvumBlastomeresPregnancyRNA, MessengerZebrafishIn Situ HybridizationEmbryo DispositionMorulaZygoteSequence AlignmentOocytesGastrulaCryopreservationBody PatterningRestriction MappingNuclear Transfer TechniquesGene ExpressionDNAEmbryo ResearchGene LibraryMorphogenesisSequence Homology, Nucleic AcidEscherichia coliGenes, BacterialCulture TechniquesMesodermSingle Embryo TransferSequence Analysis, DNAZebrafish ProteinsBlotting, NorthernEctogenesisTranscription FactorsRecombinant ProteinsMutationEctodermDNA PrimersPlasmidsChromosome MappingPolymerase Chain ReactionPregnancy RateXenopus ProteinsSeedsHomeodomain ProteinsBlotting, SouthernTranscription, GeneticDrosophilaXenopus laevisSperm Injections, IntracytoplasmicXenopusPhenotypeParthenogenesisDrosophila ProteinsGenesEndodermTissue DistributionCattleFetal ViabilitySea UrchinsEmbryonic InductionNucleic Acid HybridizationBlastodermCell DifferentiationAnimals, Genetically ModifiedFertilizationPhylogenyDNA-Binding ProteinsCell LineTime FactorsMicroinjectionsNervous SystemPreimplantation DiagnosisNotochordDrosophila melanogasterDNA, BacterialChimeraReverse Transcriptase Polymerase Chain ReactionOpen Reading FramesDNA Restriction EnzymesYolk SacOrgan SpecificitySuperovulationCulture MediaRNA