he generation of a functional protein product from the Р (continues on page 80)Р78 Medicine TodayР How a Cloned Sheep Р Could Help MedicineР In 1997, two scientists did the unthinkable—they cloned one Р mammal using the cells of another adult animal. Cloning had Р previously been performed using embryonic cells, but this Р was the first time it had been performed using cells from an Р adult animal. The scientists involved were Ian Wilmut and Р Keith Campbell, working with a staff at the Roslin Institute Р in Edinburgh, Scotland. The animal they cloned was a sheep Р named Dolly, who became famous throughout the world. Р Dolly lived to be six years old.Р The cell from which Dolly was cloned came from the Р mammary gland of another sheep; the concept that a full Р Dolly the sheep (Wikimedia)
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