Jeremiah Cornelius writes: Researchers with the European Food Safety Authority discovered variants of the Cauliflower mosaic virus 35S in the most widely harvested varieties of genetically-modified crops, including Monsanto's RoundupReady Soy and Maze. According to researchers, Podevin and du Jardin, the particular "Gene IV" is responsible for a number of possible consequences that could affect human health, including inhibition of RNA silencing and production of proteins with known toxicity. The EFSA is endorsing "retrospective risk assessment" of CaMV promoter and its Gene VI sequences — in an attempt to give it a clean bill of health. It is unknown if the presence of the hidden viral genes were the result of laboratory contamination or a possible recombinant product of the resultant organism. There are serious implications for the production of GMO for foodstuffs, given either possibility.