Microbiology Virulence factors of Staphylococcus aureus include all of the following except one. Which one is the exception? A Beta-lactamases B Coagulase C Enterotoxins D M Protein 💡 Explanation Virulence factors of Staphylococcus aureus include all of the following except one. Which one is the exception? ✓ Correct Answer: D. M Protein