Acquired MG is an autoimmune disease in which the body immune system mistakenly attacks and destroys special proteins (acetylcholine receptors) located on the muscle surface where the nerve attaches to the muscle.

• 犬重肌无力症属于一种自身免疫性疾病；疾病的发病机理为狗体内免疫系统攻击并毁灭相关的特殊蛋白；这类作为乙酰胆碱受体的蛋白质主要位于肌肉表面与神经结合处.