"They can make a big difference as to whether you get sick, or you don't get sick, " says Peter Parham, a professor of cell biology at Stanford.

斯坦福大学细胞生物学教授皮特帕汉说，“NK细胞对人类是否得病至关重要。”

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After all, cell phones can be awfully handy if you're ever sick, hurt, or lost.

毕竟，如果你病了，受伤了或是迷路了手机是如此就手可用。

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But overall, funding for stem-cell research will surely increase, raising hopes for many sick people.

不过，总的来说，用于干细胞研究的资金定会增加，给许多与病魔战斗的人们带来了希冀。

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Sick animals often have higher white-cell counts as their bodies churn out more ammunition to fight the infection, but those in the Virginian study all came from zoos, and were believed to be hale and hearty.

ECONOMIST: Promiscuity pays