Sygenta admitted that the unapproved GM maize "bt10", which has been distributed for four years was not exactly identical with the approved variety bt11, as initially claimed. Among other differences the construct contains an antibiotic resistance gene.</p><p><a href="http://www.foeeurope.org/press/2005/AB_30_March_Syngenta.htm">FoE Europe - Press Release</a></p><p><a href="http://www.saveourseeds.org/downloads/nature_bt_10_29_03_05.pdf">Nature: Stray seeds had antibiotic-resistance genes</a></p><p><a href="http://www.guardian.co.uk/uk_news/story/0,3604,1449692,00.html">Guardian: Joint US-UK cover-up alleged over GM maize</a>