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Lab-Grown Anal Sphincter is Hilarious, Useful

io9 is reporting via Discover Magazine that scientists have succeeded in growing a working anal sphincter in a petri dish. Although a lab-grown human sphincter has yet to be tested, testing on mice has been promising. It's a huge relief to know we may very well have a back-up in place if/when our own sphincters give out for good.

Image Credit: Wake Forest Institute of Regenerative Medicine

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