该技术基于β-葡糖醛酸糖苷酶（一种来自大肠杆菌的酶）。

The technique is based on beta-glucuronidase, an enzyme from the bacterium Escherichia coli.

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调查人员需要继续寻找致命性大肠杆菌的病源。

Investigators need to find the source of the deadly E. coli.

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然而，这些条例没有将大肠杆菌的一些罕见种类纳入监管范围。

But the regulations do not cover rarer forms of E. coli.

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This restriction enzyme was found in a natural source, it was found in a micro-organism called E.coli.

这个限制性内切酶源于自然界,是从名为大肠杆菌的微生物中发现的

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And what he could show was that it could be expressed, this is a picture from his 1994 science paper, in that e coli, and it is going to fluoresce green.

他证明了它可以被表达，这是1994年science文章里的一张图，在这大肠杆菌里，它有绿色的萤光。

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It was found in strain R, a particular strain of E.coli, and it was the first one found, There's a nomenclature that's evolved for this.

酶被发现于R菌株,大肠杆菌中一种特别的菌株,又是被发现的第一种内切酶,有一种专门为此制定的命名法

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