Micro clarification

[aspiringmd1015]

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whats the difference between using the quellung reactions for serotyping ecanspulated organisms compared to the latex particle agglutination test? in both cases we use antibodies against the capsule? any significant differnece besides the swelling noted with quellung?

 

[Macaroon_Berry]

Quelling reaction was an older technique that is not used clinically anymore but still shows up on the USMLE, while Latex Particle Agglutination is a newer test that is used clinically in labs. They both accomplish the same thing as you mentioned.