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June 2002

Cloning Can't Be Stopped

Controversy has surrounded the advent of every reproductive technology from artificial insemination to in vitro fertilization. Still, human cloning, like its forerunners, will happen.

By Daniel J. Kevles

Dolly, the world's most famous sheep, was cloned from the udder cells of an adult ewe. On announcing her birth in 1997, embryologists Ian Wilmut and Keith Campbell, who had engineered her, noted that she had been named in honor of the entertainer Dolly Parton. Wilmut explained, "No one could think of a more impressive set of mammary glands than Dolly Parton's." Parton responded, "I'm honored."

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