Antibodies attack the vesicles containing acetylcholine as they exit the presynaptic membrane

Antibodies attack the acetylcholine receptors on the motor end plate region of the muscle cell

 Antibodies attack acetylcholinesterase and prevent the clearning of acetylcholine

Antibodies attack the SNAP and SNARE proteins in the presynaptic neuron

Antibodies attack the sarcoplasmic reticulum preventing the release of Ca++