There are more phages on earth than every other organism combined, including bacteria.

地球上所有有机体加起来也没有噬菌体数量多，包括细菌。

A phage is a virus; not quite alive, not quite dead.

噬菌体一种病毒；然而它并不完全活，也不完全。

In the West, there have been successful phage trials for foot ulcers.

在西方，已经有成功噬菌体试验治疗足溃疡。

But phages also have major flaws.

然而，噬菌体有一个最大缺点。

Like any other virus, phages need a host to survive and reproduce.

像所有其他病毒一样，噬菌体需要宿主来生存繁殖。

This happens when phages, rather than killing their hosts immediately, integrate their genomes into those of their prey.

噬菌体不立即杀宿主，而将自己基因组整合到猎物基因组中时，就会发生这种情况。

Phages, viruses that attack bacteria but don't affect humans, are one promising new avenue to combat bacterial infections.

噬菌体，一种能攻击细菌但不感染人体病毒，一个有景对抗细菌感染新途径。

Several clinical trials of phage therapy have already been successfully conducted in Poland, the nation of Georgia and Bangladesh.

波兰、格鲁吉亚和孟加拉国已经成功地进行了若干噬菌体治疗临床试验。

That helps the phages, because their bacterial prey also accumulate in mucus, which is thus a rich hunting ground.

这有助于噬菌体，因为细菌侵染过程也积聚在粘液中，这就为噬菌体提供了大量寄生宿主。

Which might make you nervous since phages are responsible for the majority of deaths on earth but you're lucky.

可能世界上大部分亡都由噬菌体导致，这一事实会让你感到紧张，然而你幸运。

Usually, a phage has chosen one specific bacteria and maybe some of its very close relatives.

通常情况下，一个噬菌体只寄生某一种细菌以及一些它们近亲。

And phages are great at infecting bacteria.

噬菌体非常擅长感染细菌。

Barr says the interaction between mucus and phage is constant. And there are health benefits when you have a cold.

巴尔说粘液和噬菌体之间互动一直进行，人患上感冒时会产生健康益处。

The side touching the food is coated with phage E2, a virus engineered to stick only to Salmonella typhimurium bacteria.

触摸食物一边涂有噬菌体E2, 这一种被研发成只会依附鼠伤寒沙门氏菌病毒。

Smith's method is known as “phage display.”

史密斯方法被称为“噬菌体展示”。

New phages are released and begin the cycle anew.

新噬菌体就此诞生，并重复上述循环。

In a weird motion, the phage squeezes its tail and injects its genetic information.

用一种奇怪动作，噬菌体将它遗传信息通过它尾巴挤进细菌中。

They only stop when the bacteria is filled up with brand-new phages.

直到整个细菌充满了新造好噬菌体。

Because after all, phages hunt bacteria.

因为毕竟， 噬菌体会捕食细菌。

Winter used Smith's phage display method to create new kinds of antibodies.

温特使用史密斯噬菌体展示方法创造了新型抗体。