I think a few people may not have actually read the article. The first goal is to have a liver that can be used for testing drugs. Then possibly, when everything has been well-tested, they hope they may be able to grow livers for transplants. Things are being done methodically. You won't see people's livers chewing their way to freedom.
Besides, if my choice is between dying from a bad liver and lack of a donor, or getting a liver that could possibly grow teeth... I'll take my chances with the liver.
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