white plaque meaning in English
结核病
Examples
- The e2 gene was amplified by rt - pcr , then examined the fragment by electrophoresis . after purification and insertion into pucm - t vecter , the recombinant plasmid pbne2pi and pbne2pii were obtained . then they were transfected e . coli jm109 and screened positive clones by blue or white plaques . the recombinant plasmids were extracted and the inserted fragments were identificated by electrophoresis
通过rt - pcr扩增e _ 2基因，电泳测定扩增片段的大小，经纯化后，连接于pucm - t载体，获得重组质粒pbne2p 、 pbne2p ，转化e ? colijm109 ，经蓝白斑筛选，挑取阳性克隆，提取质粒，直接电泳鉴定和酶切鉴定。