The way the body recognises an infection is by examining molecules from the infectious agent.
身体对外物感染的识别是通过检测感染性外物的分子来实现的。
I reckon a lot of these mysterious chronic diseases are related to some infectious agent that's been a trigger.
我猜测很多神秘的慢性疾病都和一些感染源的激发有关。
It might have happened when you were a child and now it [the infectious agent] is long gone, but it sets you up for a problem later in life.
你也许在小时候受过一次感染，而现在它(那个感染源)已经不复存在，但它为你后来的某个疾病埋下了病根。
Whatever the answer, it seems certain that an infectious agent of unusual properties has been discovered.
无论结果如何，无可质疑的是一种非同寻常的传染性因子已经被发现了。
Virus: Microscopic, simple infectious agent that can multiply only in living cells of animals, plants, or bacteria.
病毒：微小、简单的传染因子，仅在动物、植物、细菌的活细胞中能够繁殖。
Polyoma virus: Minute infectious agent normally present in extremely small amounts in wild mice without causing obvious ill effects.
多瘤病毒：存在于野鼠身上、数量极少、致病力不强的一种感染性小病原体。
The test tube is obviously an unnatural situation, but it shows that prions can leap the species barrier without the aid of any other infectious agent.
显然在试管里的情况是一种非自然状态，但是这项研究表明朊蛋白能在不借助于任何其它传染媒介的情况下跨越物种障碍。
There are early Suggestions that the virus may be a secondary infection more likely to invade when hosts already are dealing with another infectious agent.
早期迹象表明，在宿主已经患另一种感染时，这种病毒可能更容易作为二次感染入侵。
"We're leveraging off probably 600 to 800 million years of genetic engineering that nature has already done to recognize an infectious agent," Hollis observes.
“我们借助了可能有六亿到八亿年历史的大自然造就的遗传工程来识别病原体，”霍利斯评论道。
"We're leveraging off probably 600 to 800 million years of genetic engineering that nature has already done to recognize an infectious agent," Hollis observes.
“我们借助了可能有六亿到八亿年历史的大自然造就的遗传工程来识别病原体，”霍利斯评论道。
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