Updated: July 27, 2010
Since the first groundbreaking animal -- Dolly the sheep -- was cloned from an adult cell back in 1997, scientists have extended the family of clones to include pigs, monkeys, cows and even household pets like cats and dogs.
Updated: July 27, 2010
Since the first groundbreaking animal -- Dolly the sheep -- was cloned from an adult cell back in 1997, scientists have extended the family of clones to include pigs, monkeys, cows and even household pets like cats and dogs.
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