This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Antibody found in patients with myasthenia gravis is directed against 
Select and explain. 
A. Acetylcholine, B. Acetylcholine receptor, C. Acetylcholine vesicles in nerve terminals, D. Actin myosin complex of the muscle
B: Acetylcholine receptor
Answer: B: Acetylcholine receptor 
Explanation: Ref Robbins 9/e p195 Myasthenia gravis Acetylcholine receptor Antibody inhibits acetylcholine binding, downmodulates receptors Muscle weakness, paralysis