European Parliament 24 March 1997, WRITTEN QUESTION No. 1027/97 by Hiltrud BREYER to the Council. Legal basis for the marketing of genetically modified products

c 391/38 ΓΕΝ Official Journal of the European Communities 23 . 12 . 97 1 (b) To obtain toxicological information to assess NF or NFI, different testing methods are available . These include in vitro and in vivo mutagenicity studies, reproduction and teratogenicity studies, as well as long term feeding studies, following a tiered approach on a case-by-case basis .