Cloning, OrganismNuclear Transfer TechniquesChick EmbryoClone CellsCloning, MolecularIsobutyratesViral InterferenceSindbis VirusAvian Sarcoma VirusesCulture TechniquesChickensVirus CultivationFibroblastsMolecular Sequence DataBase SequenceAmino Acid SequenceCells, CulturedSequence Homology, Amino AcidDNA, ComplementaryGenes, BacterialEscherichia coliRestriction MappingSequence AlignmentPlasmidsRNA, MessengerSequence Homology, Nucleic AcidDNARecombinant ProteinsSequence Analysis, DNAGene LibraryGene ExpressionGenesBlotting, NorthernDNA Restriction EnzymesNucleic Acid HybridizationChromosome MappingBlotting, SouthernDNA, BacterialPolymerase Chain Reaction