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BMJ 2001; 323 doi: http://dx.doi.org/10.1136/bmj.323.7323.1204 (Published 24 November 2001) Cite this as: BMJ 2001;323:1204

Cloned cows appear normal: Twenty four sexually mature cloned cattle show none of the defects that have plagued some adult clones, such as premature ageing, says a new report to be published in Science next week. Robert Lanza and colleagues at Advanced Cell Technology, in Worcester, Massachusetts, evaluated 30 cloned cattle, six of which died shortly after …

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