Dolly the sheep, the first cloned mammal, is euthanized Dolly was born on the 5th of July 1996 and proved that a cell taken from a specific part of the body could be used to recreate a whole individual. This in turn led to great leaps forward in the promising field of stem cells. After successfully producing six lambs Dolly developed lung cancer caused by a viral infection and was put to sleep 5 months short of her 7th birthday… She was then stuffed and placed on display in the National Museum o

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