Human-like teeth successfully grown in a pig’s mouth
Scientists have been manipulating genes to grow human cells in animals for decades. They have now shown it is possible to cultivate human teeth cells inside of a pig's mouth. The teeth that grew inside the pigs didn't reach full human tooth size and likely wouldn't stand up to regular use, but these findings could lead to the development of biological tooth substitutes. Research shows that more than half of US adults may be receptive to the technology.