Belly buttons are most people's first scars, which form when doctors cut their umbilical cord after birth. Most innies are full of dozens of kinds of bacteria, fungi, and lint - especially if they're ...

Belly buttons are the first human scar, and about 90% of them are innies. If you have an innie, chances are it’s full of dozens of kinds of bacteria, fungi, and lint — especially if you have a hairy ...

A biologist once made cheese with belly-button bacteria. Here's how that's possible. Belly buttons are the first human scar, and about 90% of them are innies. If you have an innie, chances are it’s ...

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