Xenopus laevisXenopusXenopus ProteinsOocytesEmbryo, NonmammalianMolecular Sequence DataMetamorphosis, BiologicalOvumAmino Acid SequenceBase SequenceGastrulaMicroinjectionsLarvaPhylogenyGene Expression Regulation, DevelopmentalCloning, MolecularDNA, RibosomalVitellogeninsRNA, MessengerBlastulaRNA, ComplementaryRNA, Ribosomal, 16SIn Situ HybridizationSequence Homology, Amino AcidSpecies SpecificityEmbryonic InductionMesodermEctodermSequence Analysis, DNADNA, ComplementaryOogenesisCell ExtractsDNATranscription, GeneticRNA, Ribosomal, 5SNucleic Acid HybridizationMelanophoresTranscription Factor TFIIIABody PatterningRNA, RibosomalSequence AlignmentBase CompositionSequence Homology, Nucleic AcidNervous SystemCarrier ProteinsMorphogenesisNucleoplasminsRNAKineticsDNA, BacterialTranscription FactorsAnimals, Genetically ModifiedGenes, rRNAGene ExpressionBiological TransportTailNotochordMembrane PotentialsProtein BiosynthesisRecombinant ProteinsCell NucleusAmphibiansTime FactorsActivinsDNA PrimersSymportersPlasmidsElectrophysiologyMaturation-Promoting FactorBacterial Typing TechniquesZygotePoly AHomeodomain ProteinsBlastomeresEgg ProteinsGenesDNA-Binding ProteinsFertilizationGene LibraryGastrulationAnuraEmbryonic DevelopmentMicroscopy, ElectronSodiumMutationBlotting, NorthernSignal TransductionVitelline MembraneGene Expression RegulationT-Box Domain ProteinsPolymerase Chain ReactionNuclear ProteinsMeiosisRecombinant Fusion ProteinsNeural CrestOligonucleotides, AntisenseActinomycetalesIon Channel GatingBone Morphogenetic ProteinsCell Membrane