A sheepherder has a large black and necrotic lesion (eschar) under his chin that has grown quickly in size. There is no pus, but the patient complains of painful and swollen glands. A Gram-positive bacillus is isolated from the lesion. Which of the following features of the responsible agent is NOT a virulant factor?
A. Endotoxin
B. Lethal toxins
C. Spore formation
D. Capsule
Answer: A. Endotoxin
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