Over 90% of Staphylococcus Aureus Isolates Are Penicillin-Resistant.Why

question 14

Multiple Choice

Over 90% of Staphylococcus aureus isolates are penicillin-resistant.Why?

• A) they have loosely organized polysaccharide slime layers which protects their cell wall.
• B) they produce coagulase.
• C) They have a coating of protein A.
• D) they produce β-lactamase.
• E) they produce staphylokinase.

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