Rheumatic fever is a sequalae of repeated infection with Streptococcus pyogenes. The pathogenesis involved in this complication is
A. An immunological response to specific Protein A
B. Antigen-antibody complex precipitation on the valves of the heart
C. Molecular mimicry in which some of the bacterial proteins resmbles those of endocardium
D. An immunological response to the antigen determining the Lancefield classification of the bacterium
Answer: C. Molecular mimicry in which some of the bacterial proteins resmbles those of endocardium
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