I would also encourage you to look at the USDA/APHIS websites as they indicate their approach to investigating the problem.
[URL="http://www.aphis.usda.gov/newsroom/2013/05/ge_wheat_detection.shtml"]APHIS[/URL]
[URL="http://www.aphis.usda.gov/newsroom/2013/05/ge_wheat_detection.shtml"]APHIS[/URL]
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