A microbe that uses left-handed dna could exist unrecognised .

dna结构向左旋的微生物是否存在尚不得知。

When the synthetic replacement genes from the library were added , the microbe was rescued .

当添加了来自于基因库的人造替代基因，细菌就获救了。

As living organisms , every microbe needs food .

作为活着的生物体，任何微生物都是需要食物的。

So why would a microbe want to take the shape of a star ?

那么，为什么一种微生物乐意呈现出星状结构呢？

Sometimes , it unleashes a potentially lethal overreaction to the invading microbe .

有时它会对入侵的微生物突然爆发出可能致命的过度反应。