Serotyping of the pneumococcus based on capsular polysaccharide is performed in
A)Ouchterlony double diffusion.
B)Western Blot.
C)immunelectrophoresis.
D)radioimmunoassay (RIA).
E)the Quellung test.

Question

Quizplus · Accepted Answer

The Quellung test is the gold standard method for serotyping pneumococcal isolates based on their capsule polysaccharides. This test involves observing the capsule swelling or "quelling" when specific antisera are added to a bacterial suspension. Options A, B, C, and D are not used in serotyping pneumococci.

Serotyping of the Pneumococcus Based on Capsular Polysaccharide Is Performed