Medicine today is aimed at killing the baby worms in a person's body.

目前的药物旨在杀死内的寄生虫幼虫。

One worm in a person's body does not do damage.

内有一只寄生虫并不会造成危害。

A parasite living in a person takes nutrients away from the person, especially the nutrient iron.

寄生在内的寄生虫会吸走内的营养物质，尤其是铁营养素。

Now in the largest genetics study to date, scientists have identified several mutations on genes in the Malaria parasites.

目前在最大规模的遗传学研究中，科学家们识别出疟疾寄生虫内几个基因突变。

Once inside the body, the parasites can be difficult to kill or control.

一旦内，这些寄生虫可能难以杀死或控制。

A decade ago, scientists found that Kenyan kids infected with plasmodium were more attractive to mosquitos than were kids who were parasite-free.

十年前，科学家在肯尼亚有过这样的发现：相对于内没有寄生虫的孩子，患有寄生虫病的儿童对蚊子有更强烈的吸引力。

Those hairs are thought to have evolved as a way to protect the caterpillars against predators and maybe against parasitoids that wanna lay their eggs inside the caterpillar's body.

这些毛被认为是作为一种保护毛虫的方式而化的，以抵御捕食者，也可能抵御那些想在毛虫内产卵的寄生虫。