quellung reaction

(redirected from quellung)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to quellung: quellung test

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.
and Hausdorf, A.: 1942, Kristalstruktur und innerkristalline Quellung der Montmorillonits, Z.
All pneumococcal isolates that showed a positive Quellung reaction with commercial type-specific antisera (Statens Serum Institute, Copenhagen, Denmark) were assigned a serotype designation (11).
Las tecnicas para determinar el serotipo capsular se basaron en la reaccion de Quellung, con el uso de antisueros procedentes de Statens Serum Institut, de Dinamarca (25, 26).
Pneumococcal isolates were sent to reference laboratories for serotyping by the quellung reaction and were categorized as vaccine-type (VT) (serotypes included in PCV7) or nonvaccine-type (NT) (all other serotypes).
Typing antisera factors 29b and 35c are the CDC Quellung reagents definitive for serotype 35B.
Serotyping was performed by use of the Neufeld Quellung reaction, a technique previously described (22) by using polyclonal antisera.
Thirty strains were sent to CDC for serotyping but could not be typed using the Quellung reaction.
Pneumococci were serotyped by the Quellung method (Statens Serum Institut, Copenhagen, Denmark).
All pneumococci isolated in 1998 and 1999 were serotyped using the quellung reaction.
Serotypes were determined by the capsular quellung reaction by using antiserum purchased from the Statens Serum Institute (Copenhagen, Denmark).
Isolates received at the Spanish Reference Laboratory for Pneumococci were serotyped by using the quellung reaction and antisera provided by the Staten Serum Institute (Copenhagen, Denmark) (8).