positive cells were screened 筛选获得阳性细胞
positive clones were screened 筛选阳性克隆
positive cells were screened out 筛选获得阳性细胞
Broutet says: "it's very important to follow up with women who are screened positive."
Broutet说：“对筛查结果为阳性的女性进行随访非常重要。”
After gene library tested, we screened positive transformants using catechol as color indicator.
经过文库检验，以邻苯二酚为显色指示剂从文库中筛选到阳性转化子。
About 200 positive clones selected randomly were differentially screened, and 29 differentially expressed genes were obtained.
随机挑取约200个阳性克隆进行差异筛选。共获得29个差异片段。
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