France's government on Wednesday asked a health watchdog to carry out a probe, possibly leading to EU suspension of a genetically-modified corn, after a study in rats linked the grain to cancer.
Earlier, French scientists led by Gilles-Eric Seralini at the University of Caen in Normandy unveiled a study that said rats fed with NK603 corn or exposed to the weedkiller used with it developed tumours.
NK603 is a corn, also called maize, made by US agribusiness giant Monsanto.
It has been engineered to make it resistant to Monsanto's herbicide Roundup.
This enables farmers to douse fields with the weedkiller in a single go, thus offering substantial savings.