Cloned Pigs Modified for Use in Human Transplants

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To minimize the risk of spreading PERV, Prather's team used a line of pig—miniature swine—that was developed specifically for the purpose of transplantation. A major advantage of these pigs is that they are unable to spread PERV.

Prather's team expects to produce a miniature swine that lacks both copies of the sugar-producing gene within the next 18 months.

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