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USMLE · Question #507
USMLE Question #507: Real Exam Question with Answer & Explanation
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Question
A 23-year-old woman with bone marrow failure is treated with a large dose of rabbit antithymocyte globulin. Ten days later, she develops fever, lymphadenopathy, arthralgias, and erythema on her hands and feet. Which of the following is the most likely cause of these symptoms?
Options
- ACytokine secretion by natural killer cells
- BEosinophil degranulation
- CImmune complex deposition in tissues
- DPolyclonal T-lymphocyte activation
- EWidespread apoptosis of B lymphocytes
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