[img_assist|nid=107|title=|desc=|link=none|align=right|width=100|height=43]In the growing season 2006, Greenpeace sampled leaves from commercially cultivated MON810 in Germany and Spain and found that Bt contents were very variable and often very low, but also that even 10 years into the cultivation of Bt crops, there is no standardised method to determine Bt contents. The results are published in this report.

A. Lorch & Ch. Then. Greenpeace Germany report, May 2007.