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A newborn develops meningitis. Streptococcus is isolated from the mother's vagina. The organism agglutinates with antiserum directed against type B surface carbohydrate. The virulence of this organism is related to a bacterial constituent that interferes with which of the following host phagocyte functions?

(A) Aggregation
(B) Chemotaxis
(C) Ingestion
(D) Intracellular killing
(E) Pseudopod formation
 
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