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Alarm sounded?

It all began with an article in Nature last September, reporting on the findings of Mexico's ministry of environment that extensive genetically modified (GM) maize contamination had been found in farmers' varieties in two states. In November, a peer-reviewed article, also in Nature , by researcher Ignacio Chapela and graduate student David Quist at the Berkeley campus of the University of California, offered scientific evidence of the Mexican contamination. The journal has since disowned the article after an independent panel concluded that the data was misrepresented. The writers, however, stand by their report. A subsequent story in Nature Biotechnology reported that the Berkeley scientists had unconfirmed indications that GM pollution may have seeped into the world's most important gene bank for corn. And a GM furore was stirred up.

Quist and Chapela reported that transgenic maize genes had introgressed

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