The designation ʺgroup A,ʺ used to help classify Streptococcus pyogenes, refers to this bacteriumʹs
A) M protein.
B) disease associations.
C) Lancefield antigen.
D) type of streptokinase produced.
E) hemolysis pattern.

Question

Quizplus · Accepted Answer

The designation "group A" refers to the Lancefield antigen classification system, which is based on the carbohydrate composition of antigens found on the bacterial cell wall. Streptococcus pyogenes is classified as Group A Streptococcus due to its specific Lancefield antigen.

The Designation ʺGroup A,ʺ Used to Help Classify Streptococcus Pyogenes