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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:


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Re:

... resistant. there are a few real old tests - bile solubility and "Quellung" reaction. hey thanks for clearing that up for me Jorge and for helping me out again! Your help ...

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by SweetSarah
Mon Mar 05, 2012 11:00 am
 
Forum: Microbiology
Topic: Is Strep mitis a member of the Strep Viridans species
Replies: 7
Views: 5300

Is Strep mitis a member of the Strep Viridans species

... resistant. there are a few real old tests - bile solubility and "Quellung" reaction.

See entire post
by JorgeLobo
Sun Mar 04, 2012 8:18 pm
 
Forum: Microbiology
Topic: Is Strep mitis a member of the Strep Viridans species
Replies: 7
Views: 5300


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