Mutants or miracles?

They were the genetically modified cows that would change the dairy industry forever, but then it all went wrong and the experiment ended up in an Australian paddock.

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Australia’s GM cows

This paddock in country Victoria could be just like any other. Surrounded by lush grass, it’s lined with trees and a wire fence.

There’s one key difference — what’s inside it is considered a “biological hazard” and is under quarantine.