But what happens in myasthenia gravis though?

但是重症无力是如何呢？

Finally, a lot of people with myasthenia gravis undergo surgical removal of the thymus.

最终，许多重症无力患者会进行胸腺切除术。

The good news is is that treatment has been able to reduce mortality from myasthenia gravis.

好消息是现在治疗方案可降低重症无力死亡率。

To better understand myasthenia gravis, let's review normal muscle contraction but at the cellular level.

为了更好理解重症无力，我们从细胞水平来了解一正常收缩时状态。

In very rare cases, myasthenia gravis can present as a paraneoplastic syndrome, which means that an underlying cancer like bronchogenic carcinoma or thymic neoplasm (also known as thymoma) generates an immune response which results in generation of autoantibodies.

在极罕见情况，重症无力会表现出副肿瘤综合征，这意味着潜在癌症如支气管肺癌、胸腺肿瘤导致免疫应答产了自身抗体。