Which of the following describes a major component of the Staphylococcus aureus cell wall. It binds to the 'Fe' moiety (stem of the Y-shaped antibody) o rIgG, exerting an antiopsonin (and therefore strongly antiphagocytic) effect?

A. capsule
B. protein A
C. cytolytic exotoxins
D. superantigen exotoxins
E. DNAse enzymes


Ans: B. protein A

Biology & Microbiology

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