Antibody found in patients of myaesthenia gravis is directed against: (A) Acetycholine, (B) Acetycholine receptors, (C) Acetycholine vesicles in nerve terminal, (D) Actin-myosin complex of the muscle
Answer is B. *myasthenia gravis is an autoimmune disease,most commonly caused by antibodies to acetylcholine receptors in the post junctional membrane of the neuromuscular junction ,which are found in around 80%of affected patients. Ref Harrison20th edition pg 2378