Mutant cows die in GM trial

Genetically modified cows were born with ovaries that grew so large they caused ruptures and killed the animals.

The bungled experiment happened during a study by AgResearch scientists at Ruakura, Hamilton, to find human fertility treatments through Genetically-Modified cows' milk.

AgResearch is studying tissue from one of three dead calves to try to find out what made the ovaries grow up to the size of tennis balls rather than the usual thumbnail-size.

http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10642031
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