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Keith Campbell dies at 58; biologist helped clone Dolly the sheep
Keith Campbell dies at 58; biologist helped clone Dolly the sheep

Keith H.S. Campbell, a noted biologist who was a key member of the British team that cloned Dolly the sheep, has died. He was 58. The University of Nottingham, where Campbell worked, said he died Oct. 5 but released no other details. In 1991, Campbell began researching animal cloning at the Roslin Institute near Edinburgh, conducting experiments that led to the 1996 birth of Dolly the sheep, the first mammal to be cloned from an adult cell. He was credited with an important insight that made the experiment work: Campbell realized it was necessary to make sure that the donor cell and the egg were both in the same stage of development, Ian Wilmut, the scientist who led the Roslin team, told...

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