title: [Characteristics of new loci of endogenous proviruses in chickens].
abstract: The composition and structure of endogenous proviruses in the genome of Italian partridge chicken was studied by the blot-hybridization method using 32P-DNA of RAV-2 virus as a probe. Among 34 fowls examined, 5-contained no endogenous proviruses related to fowl leukemia viruses. DNA of the other fowls contained various combinations of 4 previously undescribed endogenous proviruses varying in structure and localization. None of them was identical in its structure with DNA of endogenous fowl virus RAV-0, all the four discovered loci have deletions. The origin, modes of genetic variability, and function of endogenous proviruses are discussed.
mesh_terms: D000818:Animals; D001354:Avian Leukosis Virus / Q000235:genetics / Q000302:isolation & purification; D001358:Avian Sarcoma Viruses / Q000235:genetics / Q000302:isolation & purification; D001483:Base Sequence; D002642:Chick Embryo; D002645:Chickens / Q000235:genetics / Q000382:microbiology*; D002872:Chromosome Deletion; D004247:DNA / Q000235:genetics; D004279:DNA, Viral / Q000235:genetics; D003673:Defective Viruses / Q000235:genetics / Q000302:isolation & purification; D005260:Female; D005796:Genes; D005814:Genes, Viral; D014644:Genetic Variation; D009693:Nucleic Acid Hybridization
chemical_list: D004279:DNA, Viral; D004247:DNA
vernacular_title: Kharakteristika novykh lokusov éndogennykh provirusov kur.