Clone CellsMammalsEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryo ImplantationBlastocystEmbryonic DevelopmentMolecular Sequence DataBase SequenceGene Expression Regulation, DevelopmentalCloning, MolecularAmino Acid SequenceEmbryo LossEmbryonic and Fetal DevelopmentFertilization in VitroCleavage Stage, OvumBlastomeresPregnancyZebrafishZygoteRNA, MessengerEmbryo DispositionIn Situ HybridizationDNA, ComplementaryMorulaOocytesGastrulaBody PatterningCloning, OrganismPhylogenyCryopreservationDNASequence Homology, Amino AcidMorphogenesisMutationCulture TechniquesMesodermSpecies SpecificityZebrafish ProteinsTranscription FactorsEmbryo ResearchNuclear Transfer TechniquesPhenotypeSingle Embryo TransferSequence Analysis, DNACell LineDrosophila ProteinsEctodermDrosophilaEctogenesisSequence AlignmentHomeodomain ProteinsCell DifferentiationGene ExpressionSequence Homology, Nucleic AcidPolymerase Chain ReactionPregnancy RateXenopus ProteinsTime FactorsTranscription, GeneticSeedsAnimals, Genetically ModifiedCattleDNA PrimersNucleic Acid HybridizationParthenogenesisSperm Injections, IntracytoplasmicMarsupialiaEndodermFertilizationGenesSignal TransductionSea UrchinsFetal ViabilityChromosome MappingEmbryonic InductionXenopus laevisXenopusDNA-Binding ProteinsEvolution, MolecularBlastodermChimeraBiological EvolutionGene Expression RegulationModels, BiologicalChickensNervous SystemMicroinjectionsBlotting, NorthernMice, Inbred C57BLDrosophila melanogasterCell DivisionMice, Inbred StrainsPreimplantation DiagnosisReverse Transcriptase Polymerase Chain ReactionYolk SacBlotting, SouthernNotochordCell Nucleus