PCR labs built in Xianyou County to boost nucleic acid detection capacity Xinhua English 2021.09.1421:08 关注 8张Staff members dispose medical waste outside a PCR (polymerase chain reaction) lab for nucleic acid testing in Xianyou County, southeast China's Fujian Province, Sept. 14, 2021. Three PCR labs have been built in the county to boost nucleic acid detection capacity. (Xinhua/Wei Peiquan)