Human-like teeth successfully grown in a pig’s mouth
For the past two decades, scientists have been manipulating genes to grow human cells where you wouldn’t quite expect them.
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Amphibians can grow hundreds of teeth but mammals can only grow 2 sets
Like tooth stem cells to build new teeth. Humans have these stem cells when we're younger. But after our adult teeth grow in, the stem cells die and disappear. To understand why, let's take a ...