a group of France's most renowned wine producers have issued a warning against the introduction of any genetically modified (gm) vines. The admonition comes against the backdrop of the recent decision by France's national agricultural research institute, Institut National de la Recherche Agronomique (inra), to resume trials of gm vines, which had been halted in 1999 after widespread concern about the use of gm products. The sole non-governmental experiment with gm vines