Also, not all germs are harmful; we need friendly bacteria that live on our skin to help fight off bad bugs, and bacteria in our mouth and gut help digest our food and prevent illness and disease.

此外，并非所有的细菌都对人体有害；我们的皮肤上需要有“友好”的细菌来帮助抵抗“坏”的细菌，口腔和肠胃里的细菌可以帮助我们消化食物，防止疾病。

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Or, to be more precise, the bacteria that live in the gut to help digest food and, it turns out, perform a host of other important functions.

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If a news story continues to develop throughout an entire day, the live-blog can become the one-stop shop for breaking developments alongside a digest of what has happened so far.

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