<prompt> Antibody found in patients of myaesthenia gravis is directed againstAcetycholineAcetycholine receptorsAcetycholine vesicles in nerve terminalActin-myosin complex of the muscle  <response>: 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 80of affected patients. Ref Harrison20th edition pg 2378 