The other is rapid serological testing which checks for the antibodies created by the immune system to fight the virus.

另一种是快速血清学检测，它检测免疫系统产生的对抗病毒的抗体。

The blood-based serological tests are capable of identifying patients who have been exposed to the coronavirus by looking at their immune response.

基于血液的血清学检测能够通过观察患者的免疫反应来识别接触过冠状病毒的患者。

Well, let's look at this paper called test performance evaluation of SARS-CoV-2 serological assays, it literally is answering the question that we're posing here.

来看这篇文章《SARS-CoV-2血清学检测的检测性能评价》，它实际上是在回答我们在上面提出的问题。

A local health official says the city plans to conduct serological tests, which target antibodies triggered by a previous infection, on about 5,000 residents in February and March.

一位地方卫生官员表示，北京市计划在 2 月和 3 月对大约 5000 名曾经感染过（新冠病毒）的居民进行血清抗体调查。