Embryo ResearchCloning, OrganismSheepSheep DiseasesClone CellsSheep, DomesticMolecular Sequence DataCloning, MolecularBase SequenceAmino Acid SequenceSheep, BighornGoatsJaagsiekte sheep retrovirusSequence Analysis, DNADNA, ComplementaryDNASpecies SpecificityRNA, MessengerPolymerase Chain ReactionScrapiePhylogenyCell LineSequence Homology, Nucleic AcidCattleNucleic Acid HybridizationFetusSequence Homology, Amino AcidGoat DiseasesTime FactorsGenetic VariationGenesChromosome MappingMutationPulmonary Adenomatosis, OvinePregnancyPhenotypeWoolDNA, BacterialGenotypeSequence AlignmentBlotting, SouthernGene ExpressionChromosomes, Artificial, BacterialT-LymphocytesDNA PrimersErythrocytesCells, CulturedBlotting, NorthernRumenPlasmidsDisease Models, AnimalLiverGenomic LibraryEscherichia coliTransfectionRecombinant ProteinsPan troglodytesTranscription, GeneticEpitopesBrainDNA Restriction EnzymesElectrophoresis, Gel, Pulsed-FieldLymphAntibodies, MonoclonalGene Expression RegulationZoonosesFecesPrions