quellung reaction


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

quellung reaction

[′kwel·əŋ rē‚ak·shən]
(microbiology)
Swelling of the capsule of a bacterial cell, caused by contact with serum containing antibodies capable of reacting with polysaccharide material in the capsule; applicable to Pneumococcus, Klebsiella, and Hemophilus.
References in periodicals archive ?
Serotyping based on the Quellung reaction requires expensive reagents and substantial training and experience to perform reliably.
Serotyping was performed by using the quellung reaction with antiserum for serogroup 6, factor 6b, and factor 6c (Statens Serum Institute, Copenhagen, Denmark).
All pneumococci isolated in 1998 and 1999 were serotyped using the quellung reaction.
In 51 of these, a pneumococcal serotype could be identified via the conventional Quellung reaction.
Serotyping, performed by Quellung reaction, showed a 35F serotype.