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CappinPeanut t1_j71kfcr wrote

Reply to comment by Mp32pingi25 in Back in the late 90s, I remember hearing that scientists “cloned a sheep”. What actually happened with the cloning, and what advancements have been made as a result of that? by foxmag86

Did the original Dolly have a lung issue or just the clone?

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wglmb t1_j71lv1v wrote

From the Wikipedia article linked above:

>she had a form of lung cancer called ovine pulmonary adenocarcinoma, also known as Jaagsiekte, which is a fairly common disease of sheep and is caused by the retrovirus JSRV.

So it was a viral infection, not a genetic issue.

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