G-TwYST will execute rat feeding trials with GM maize NK 603 based on OECD Test Guidelines and according to EFSA considerations. In the case of maize NK603 two 90-day and a combined 2-year chronic toxicity/carcinogenicity study will be performed. By combining the results of the G-TwYST project with those of the GRACE project (90-day and 1-year study with maize MON810) it will be possible for the ...