求翻译：hazards posed by them. The present study was therefore aimed at developing a PCR assay to detect STEC, L. monocytogenes and是什么意思？

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悬赏分：1 - 离问题结束还有

hazards posed by them. The present study was therefore aimed at developing a PCR assay to detect STEC, L. monocytogenes and

问题补充：

匿名	2013-05-23 12:21:38

匿名	2013-05-23 12:23:18 他们所造成的危害。本研究旨在发展一个因此pcr测定检测上海实业交通电器有限公司、李斯特菌和

匿名	2013-05-23 12:24:58

匿名	2013-05-23 12:26:38

匿名	2013-05-23 12:28:18

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