It's been 20 years since research that gave birth to Dolly the sheep began. Just three weeks after the scientific world celebrated such a feat, researchers from The University of Nottingham released their own study of sheep from the same cell line as Dolly, saying that it's possible for cloned animals to live long and healthy lives.
Called Daisy, Dianna, Denise and Debbie, the Nottingham Dollies are now 9 years old and are part of a flock of cloned sheep cared for by Kevin Sinclair, a developmental biology expert from the university's School of Biosciences. They were cloned from the same mammary gland cell line as Dolly while the other clones were from fetal fibroblasts. Published in the journal
Nature Communications, Sinclair and colleagues'
study is
the first to detail a comprehensive assessment of non-communicable
diseases related to age in cloned animals. At 7 to 9 years old, the
Nottingham Dollies and the rest of their flock are 60 to 70 years old in
human years. And at that age, the cloned sheep were shown to exhibit no
long-term detrimental effects to their health...
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