READY FOR A CLOSE-UP
In the scientific version of her obituary, Dolly the Sheep was reported to have suffered from severe arthritis in her knees.
The finding and Dolly’s early death from an infection led many researchers to think that cloning might cause animals to age prematurely.But new X-rays of Dolly’s skeleton and those of other cloned sheep and Dolly’s naturally conceived daughter Bonnie indicate that the world’s first cloned mammal had the joints of normal sheep of her age. Just like other sheep, Dolly had a little bit of arthritis in her hips, knees and elbows, developmental biologist Kevin Sinclair of the University of Nottingham in England and colleagues report November 23 in Scientific Reports.
The researchers decided to reexamine Dolly’s remains after finding that her…
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