To explain: The classification of Lancefield classification that is based on the property of streptococci.
Introduction: The process of formation of visible clumps due to the reaction taking place between antigen and antibody is termed as agglutination. Agglutination occurs due to the reaction between specific antibodies with the antigens present on the bacterial cell. In serology, slide agglutination is the qualitative test that is used to detect the presence of antibodies.
Explanation of Solution
The Lancefield classification of streptococci categorizes this group of bacteria into immunological groups. This classification is carried out on the basis of the carbohydrate antigens that are associated with these cells. These antigens are designated in the letter names A through V. These carbohydrate antigens cause agglutination with its specific antibodies.
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Chapter 58 Solutions
BENSON'S MICROBIO.APPL.:LAB..,CONC.
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