内部传感分子同时也是细菌武器，如弹性蛋白酶的开关，该酶能够破坏肺内的弹性组织。

The QS molecules also switch on bacterial weapons such as 'elastase', an enzyme which breaks down elastic tissue in the lung.

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虽然这些产氨菌不能有效地降解蛋白质，但它们可以利用其他瘤胃细菌的蛋白酶或肽酶水解的产物小肽与氨基酸。

Although these ammonia producers have limited ability to degrade proteins, they can utilize peptides or amino acids released by the proteases and peptidases of other ruminal bacteria.

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溃疡是由细菌引起的称为幽门螺杆菌与胃酸分泌过多、胃蛋白酶的内部。

Ulcer is caused by the bacteria called Helicobacter pylori and by excessive internal secretions of gastric acid and pepsin .

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