<prompt> Antibody found in patients with myasthenia gravis is directed againstAcetylcholineAcetylcholine receptorAcetylcholine vesicles in nerve terminalsActin myosin complex of the muscle  <response>: Ref Robbins 9e p195 Myasthenia gravis Acetylcholine receptor Antibody inhibits acetylcholine binding, downmodulates receptors Muscle weakness, paralysis 