antigenic drift
A small change in the antigenic character of an organism that allows it to avoid attack by the immune system.

Microbiology. . 2009.

Look at other dictionaries:

  • Antigenic drift — Antigenic driftcite journal author=D. J. D. Earn, J. Dushoff, S. A. Levin journal=Trends in Ecology and Evolution title=Ecology and Evolution of the Flu date=2002 volume=17 pages=334 340] [cite book author=A. W. Hampson chapter=Influenza virus… …   Wikipedia

  • antigenic drift — antigenic drift. См. антигенный дрейф. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • antigenic drift — relatively minor changes in the antigenic structure of a virus strain, probably resulting from natural selection of virus variants circulating among an immune or partially immune population. Cf. antigenic shift, under shift …   Medical dictionary

  • Antigenic shift — Not to be confused with antigenic drift or genetic drift. NIAID illustration of potential influenza antigenic shift Antigenic shift is the process by which two or more different strains of a virus, or strains of two or more different viruses …   Wikipedia

  • antigenic shift — a sudden, major change in the antigenicity of a virus, seen especially in influenza viruses, resulting from the recombination of the genomes of two virus strains; it is associated with pandemics because hosts do not have immunity to the new… …   Medical dictionary

  • antigenic variation — 1. a mechanism whereby microorganisms or parasites, such as trypanosomes, plasmodia, and Borrelia, are enabled to escape immune surveillance of a host by modifying or completely altering their surface antigens. 2. a phenomenon occurring in the… …   Medical dictionary

  • drift — 1. A gradual movement, as from an original position. 2. A gradual change in the value of a random variable over time as a result of various factors, some random and some systematic effects of trend, manipulation, etc. antigenic d. the …   Medical dictionary

  • Original antigenic sin — Original antigenic sin, also known as the Hoskins effect,[1] refers to the propensity of the body s immune system to preferentially utilize immunological memory based on a previous infection when a second slightly different version, of that… …   Wikipedia

  • Genetic drift — ] Especially in small populations, the statistical effect of sampling error ( during reproduction ) on certain alleles from the overall population may result in an allele ( and the biological traits that it confers ) becoming more common or rare… …   Wikipedia

  • антигенный дрейф — antigenic drift антигенный дрейф. Cовокупность постепенных, обычно незначительных изменений антигенных детерминант некоторых вирусов, обусловленных отбором антигенов оболочки вирусов; А.д. обусловлен мутациями и принципиально не отличется от… …   Молекулярная биология и генетика. Толковый словарь.

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