Pluck out his DNA and it could be copied millions of times using a technique called the polymerase chain reaction (pcr).

取出他的遗传物质，利用聚合酶链反应技术可以复制数百万次。

Every day, beginning from today, courier personnel who are primarily from local meal delivery and e-commerce platforms are subjected to a polymerase chain reaction (PCR) test and antigen self-testing.

从今天开始，每天对主要来自当地送餐和电子商务平台的快递人员进行聚合酶链反应（PCR）测试和抗原自我检测。

Many modern molecular tests such as flow cytometry, polymerase chain reaction (PCR), In situ hybridization, immunohistochemistry, cytogenetics and gene rearrangements studies fall within the territory of pathology.

许多现代分子检测，如流式细胞术，聚合酶链反应（PCR），原位杂交，免疫组织化学，细胞遗传学和基因重排研究都属于病理学领域。