Embryo ResearchCloning, OrganismSheepMammalsSheep DiseasesClone CellsSheep, DomesticCloning, MolecularMolecular Sequence DataBase SequenceAmino Acid SequenceSequence Homology, Amino AcidDNA, ComplementaryPhylogenySequence Analysis, DNARNA, MessengerDNASequence AlignmentSpecies SpecificitySequence Homology, Nucleic AcidSheep, BighornPolymerase Chain ReactionEscherichia coliPlasmidsCell LineGenes, BacterialNucleic Acid HybridizationGenesGoatsMutationChromosome MappingRecombinant ProteinsDNA, BacterialGene ExpressionCattleDNA Restriction EnzymesDNA PrimersTranscription, GeneticBiological EvolutionBlotting, SouthernJaagsiekte sheep retrovirusEvolution, MolecularPhenotypeBlotting, NorthernDNA, RecombinantGene Expression RegulationGenetic VariationBacterial ProteinsTime FactorsMultigene FamilyRestriction MappingScrapieOpen Reading FramesFetusMarsupialiaPregnancyRodentiaChickensGenomic LibraryKineticsLiverConserved SequenceGenetic Complementation TestTissue DistributionGenotypeBrainCells, CulturedSwinePromoter Regions, GeneticCricetinaeGenetic VectorsModels, BiologicalCarrier ProteinsChromosomes, Artificial, BacterialRepetitive Sequences, Nucleic AcidReverse Transcriptase Polymerase Chain ReactionDogsGoat DiseasesGene Expression Regulation, DevelopmentalBirdsCosmidsMice, Inbred C57BLAnimals, WildDNA, ViralMembrane ProteinsTranscription FactorsOrgan SpecificityT-LymphocytesRecombinant Fusion ProteinsArtiodactylaPulmonary Adenomatosis, OvineExonsBlotting, WesternDisease Models, AnimalGenes, ViralErythrocytesIn Situ HybridizationRNAAntibodies, MonoclonalEpitopes