21. Principles of Disease

Streptococcus pyogenes creates a C5a peptidase enzyme which breaks down the host's C5a proteins. Breaking down the C5a proteins has what result?

The C3b complement protein is incredibly important for opsonization of pathogenic material. How do some pathogens avoid opsonization by interfering with C3b?

Certain pathogens have Fc receptors on their surface to avoid which immune responses to infection?

Why do some pathogens destroy the host organism's C5a proteins?

Why would some pathogens inhibit the functions of C3 convertase as a defense mechanism against the host's immune cells?

What benefit do pathogenic bacteria obtain from secreting membrane-damaging toxins?