These are bionengineered tooth crowns grown from pig cells that were implanted in a rat's stomach. Obviously a beta version resulted. But eventually scientists hope to use teeth like these in your mouth. Yum. Image by Douglas McFadd via Getty.
Bioengineered Pig Teeth Grown Inside a Rat's Stomach
7:30 AM on Fri Dec 21 2007
By Annalee Newitz
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