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Seeds for genetically modified maize NK603 are not freely available for cultivation in Europe and test material is purchased outside Europe.

All maize material (GM, near-isogenic and conventional varieties) used for feed production in the frame of G-TwYST was available on the market. The G-TwYST consortium did not sign any contract with the variety and event owners.


The diets purchased for the feeding trials are nutritionally balanced and serve the trial design. Diets for the long-term feeding trial are ordered batch-wise because of limited shelf life. All diets shall be produced according to GLP standards. Diet suppliers shall warrant that no other transgenes than those expected are present.

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G-TwYST results published

13 February 2019

This week the paper  "Lack of adverse effects in subchronic and chronic toxicity/carcinogenicity studies on the glyphosate-resistant genetically modified maize NK603 in Wistar Han RCC rats" has been published in Archives of Toxicology. The open source paper is available online at https://doi.org/10.1007/s00204-019-02400-1.

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G-TwYST data available at CADIMA

13 February 2019

G-TwYST has  made accessible the detailed scientific information including raw data via the open access database CADIMA set up by the FP7 project GRACE.

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