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Current Topics in Microbiology and Immunology - Ergebnisse der Mikrobiologie und Immunitatsforschung Volume 59 (Paperback, Softcover reprint of the original 1st ed. 1972)
Loot Price: R2,959
Discovery Miles 29 590
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Current Topics in Microbiology and Immunology - Ergebnisse der Mikrobiologie und Immunitatsforschung Volume 59 (Paperback, Softcover reprint of the original 1st ed. 1972)
Series: Current Topics in Microbiology and Immunology, 59
Expected to ship within 10 - 15 working days
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Influenza continues to be one of the major epidemic diseases of man
and is, in fact, his only remaining pandemic disease (BEVERIDGE,
1969). This is largely because influenza virus undergoes extreme
antigenic variation, the mechanism of which is still poorly
understood. Two kinds of antigenic variation occur in influenza
viruses, antigenic drift and major antigenic shifts; both involve
chan ges in the hemagglutinin and neuraminidase antigens on the
surface of the virus. Antigenic drift, which involves gradual
changes in the surface antigens of influenza virus, is thought to
result from the selection by an immune popula tion of mutant virus
particles with altered antigenic determinants. These mutants
therefore possess a growth advantage in the presence of antibody
(FRAN CIS and MAASSAB, 1965; ARCHETTI and HORSFALL, 1950; HAMRE et
aI., 1958). It has been shown that antigenic mutants isolated in
vitro by selection with antibody have changes in amino acid
sequence in the polypeptides of the hem agglutinin subunits (LAVER
and WEBSTER, 1968) and it is likely that antigenic drift in the
neuraminidase occurs by the same mechanism.
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