Quellung reaction

Definition

noun

A biochemical reaction in which anticapsular antibodies bind to the capsule of a bacterium, resulting in the capsule to swell and its outlines becoming clearly demarcated and therefore is more conspicuous, especially under the microscope.


Supplement

It is done especially with bacteria that form capsules, such as Streptococcus pneumoniae and Haemophilus influenzae. The capsule becomes more conspicuous under a microscope after the capsular antigen has combined with a specific antibody.


Word origin: German quellung for "swelling"

Synonyms:


Please contribute to this project, if you have more information about this term feel free to edit this page



This page was last modified on 9 May 2009, at 12:07. This page has been accessed 9,874 times. 
What links here | Related changes | Permanent link