Embryo ResearchCloning, OrganismSheepMammalsSheep DiseasesSheep, DomesticCloning, MolecularMolecular Sequence DataBase SequenceAmino Acid SequenceSheep, BighornSequence Homology, Amino AcidPhylogenyGoatsJaagsiekte sheep retrovirusSequence AlignmentDNA, ComplementaryEscherichia coliSequence Analysis, DNAGenes, BacterialPlasmidsSpecies SpecificityRNA, MessengerRestriction MappingScrapieSequence Homology, Nucleic AcidRecombinant ProteinsCattleMarsupialiaBiological EvolutionEvolution, MolecularDNAGenesPolymerase Chain ReactionMutationFetusDNA, BacterialDNA Restriction EnzymesRodentiaChromosome MappingTranscription, GeneticGene ExpressionNucleic Acid HybridizationCell LineDNA PrimersPregnancyGoat DiseasesArtiodactylaPulmonary Adenomatosis, OvineBacterial ProteinsWoolDNA, RecombinantPinnipediaGene Expression RegulationBlotting, SouthernReptilesMultigene FamilyCetaceaConserved SequenceGenetic Complementation TestBlotting, NorthernBirdsAnimals, WildOpen Reading FramesRumenShrewsGene LibraryKineticsTime FactorsChickensInsectivoraGene Expression Regulation, DevelopmentalErythrocytesPromoter Regions, GeneticVertebratesPhenotypeTissue DistributionSwineLymphCarnivoraModels, BiologicalOocytesFossilsNuclear Transfer Techniques