Two leading scientists are calling for the Government to reject a new kind of genetically modified corn which they say could be linked to a variety of diseases. Professor Garth Cooper of Auckland University and Associate Professor Jack Heinemann of Canterbury University want tougher testing of the corn, LY038, made by international seed company Monsanto. The corn is designed to be a more nutritious feed for animals, but because of the risk of its accidentally entering the human food chain - which officials say is slight - it needs approval as a human food before it can be used.