VertebratesAnimal Care CommitteesAnimal WelfareClone CellsZebrafishCloning, MolecularMolecular Sequence DataEmbryo, MammalianEmbryo, NonmammalianChick EmbryoAmino Acid SequenceBase SequenceEmbryo ImplantationGene Expression Regulation, DevelopmentalSequence Homology, Amino AcidDNA, ComplementaryEmbryonic DevelopmentBlastocystSequence AlignmentCloning, OrganismIn Situ HybridizationBody PatterningRNA, MessengerZebrafish ProteinsEmbryonic and Fetal DevelopmentDNAEmbryo LossSequence Homology, Nucleic AcidSequence Analysis, DNAEvolution, MolecularBlastomeresXenopus ProteinsFertilization in VitroCleavage Stage, OvumGastrulaMorphogenesisMutationGene ExpressionTranscription FactorsPregnancyHomeodomain ProteinsSpecies SpecificityMesodermChordata, NonvertebrateXenopusPolymerase Chain ReactionDNA PrimersDrosophilaXenopus laevisDrosophila ProteinsOocytesChromosome MappingCell LineBiological EvolutionChickensAnimals, Genetically ModifiedBlotting, NorthernConserved SequenceEctodermGenesZygoteFishesPhenotypeTranscription, GeneticEscherichia coliRecombinant ProteinsBlotting, SouthernNucleic Acid HybridizationPlasmidsLampreysEmbryo DispositionMorulaGene LibraryGenes, BacterialOryziasUrochordataRestriction MappingGenes, HomeoboxDNA-Binding ProteinsCell DifferentiationNervous SystemSignal TransductionEmbryonic InductionInvertebratesHagfishesTissue DistributionCryopreservationCiona intestinalisNuclear Transfer TechniquesDrosophila melanogasterReptilesGene Expression RegulationCulture TechniquesLarvaCattleMammalsNeural CrestEmbryo ResearchEndodermTime Factors