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  • Title: [Genetic variability of epidemic strains of influenza virus serotypes H1N1 and H3N2 during antigenic drift].
    Author: Shilov AA, Kozlov IuV, Chaĭka OV, Kurmanova AG, Zhdanov VM.
    Journal: Vopr Virusol; 1987; 32(4):419-29. PubMed ID: 3686982.
    Abstract:
    Data are presented on structural variability of individual genes of selected variants of epidemic influenza viruses H1N1 (1977-1979) and H3N2 (1968-1979) in the course of antigenic drift obtained by oligonucleotide mapping. Six out of 8 genes of H1N1 viruses were found to be more variable than the corresponding genes of H3N2 viruses. Only HA and NS genes of H3N2 viruses underwent greater structural changes as compared with the analogous genes of H1N1 viruses. In viruses of both serotypes, most variable were the genes coding for hemagglutinin and matrix protein. Possible causes of greater structural variability of the matrix protein gene in the course of antigenic drift are discussed.
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