Mutant cows die in GM trial http://gmwatch.eu/latest-listing/1-news-items/12185-cows-die-in-gm-experiment-

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 GM 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.Details of the deaths - in veterinary reports released to the Weekend Herald under the Official Information Act - have reignited debate over the ethics of GM trials on animals.