请问在哪里能找到与生物技术相关英文文献资料（最好中英对照）

可以是宏观的论述，最好是某个具体问题或新技术的相关资料

我也是帮一个在上学的朋友找的,没定什么主题啊,我对这个专业也是门外汉……

你必须得先找个主题，然后再baidu中键入中文和相关的一个或几个英文单词，应该会找到的

这一般是在生物类文献的基因中出现，两个基因中间加上两个冒号，原意解释如下，请参考 the three mutation strains are constructed using tet gene marker for identification and verification. each mutation strain is showed: delta ica means a gene ice allele has been deleted in strain rn4220; agr delta means the two alleles of agr gene have been deleted, therefore agr is null in strain pc6911, and sara gene indicates this gene is used with tet marker in construction of strain uams-240. when you make some gene deletion in s. aureus isolates, or other species, you need some selection marker which is genetically linking to that of deleted gene. tet is a gene and used s a genetic marker for selecting strain with specific gene deletion. in strain uams-240, one allele of sara gene has been mutated with the integration of selecting marker tet at the locus.

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