Quellung reaction
The increase in visibility or the swelling of the capsule of a microorganism in the presence of antibodies against capsular antigens.

Microbiology. . 2009.

Look at other dictionaries:

  • Quellung reaction — The Quellung reaction is a biochemical reaction in which antibodies bind to the capsule of Streptococcus pneumoniae and thus allow it to be visualized under a microscope. If the reaction is positive, the capsule becomes opaque and appears to… …   Wikipedia

  • quellung reaction — noun the swelling of the capsule surrounding a microorganism after reaction with an antibody; the basis of certain tests for identifying microorganisms pneumococcus quellung • Syn: ↑quellung • Hypernyms: ↑organic process, ↑biological process …   Useful english dictionary

  • quellung reaction — a reaction in which antibodies against the bacterium Streptococcus pneumoniae combine with the bacterial capsule, which becomes swollen and visible to light microscopy. * * * [Ger. “swelling”] Neufeld r …   Medical dictionary

  • quellung reaction — a reaction in which antibodies against the bacterium Streptococcus pneumoniae combine with the bacterial capsule, which becomes swollen and visible to light microscopy …   The new mediacal dictionary

  • Quellung reaction — Swelling of the capsule surrounding a bacterium as a result of interaction with anticapsular antibody; consequently the capsule becomes more refractile and conspicuous …   Dictionary of molecular biology

  • Реакция Набухания (Quellung Reaction) — реакция, в ходе которой антитела к бактериям вида Streptococcus pneumoniae соединяются с антигенами капсул бактерий, которые набухают и становятся видимыми в обычный световой микроскоп. Источник: Медицинский словарь …   Медицинские термины

  • quellung — noun the swelling of the capsule surrounding a microorganism after reaction with an antibody; the basis of certain tests for identifying microorganisms pneumococcus quellung • Syn: ↑quellung reaction • Hypernyms: ↑organic process, ↑biological… …   Useful english dictionary

  • reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

  • quellung test — Neufeld reaction; see under reaction …   Medical dictionary

  • quellung — quel·lung kwel əŋ, kvel u̇ŋ n, often cap swelling of the capsule of a microorganism after reaction with antibody …   Medical dictionary

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