USMLE Step 1 Quiz
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HEMATOLOGY AND ONCOLOGY
Question 1 of 20
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A 70-year-old man with a history of small cell lung cancer presents to the emergency department with progressive proximal muscle weakness. He reports difficulty rising from a chair and climbing stairs. On examination, his strength improves with repeated muscle contraction. Deep tendon reflexes are diminished.
This patient's neurologic syndrome is caused by autoantibodies directed against which of the following targets?
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