The major virulence factor of Corynebacterium diphtheriae that causes serious systemic effects is ________.
A) its capsules
B) metachromatic granules
C) an exotoxin
D) endospores
E) an endotoxin
Correct Answer:
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Q5: The most common type of virus leading
Q16: What features of the respiratory system protect
Q17: Normal biota of the upper respiratory tract
Q18: Superantigens _.
A)include streptolysin O
B)include erythrogenic toxin
C)induce production
Q20: Cold viruses are transmitted by _.
A)droplet contact
Q22: Diphtherotoxin targets cells in the _.
A)pharynx and
Q23: The causative organism of whooping cough is
Q24: Pertussis has the following characteristics except _.
A)the
Q25: Formation of a pseudomembrane in the back
Q26: Respiratory syncytial virus _.
A)causes serious disease in
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