In 1995, Pusztai began research on
genetically modified potatoes containing the GNA
lectin gene from the
snowdrop plant. and sent the raw data to six anonymous reviewers, who also criticized Pusztai's work. Pusztai sent the audit report and his rebuttal to scientists who requested it, and in February 1999, twenty-one European and American scientists released a memo supporting Pusztai. James and the Rowett Institute released a statement on 10 August falsely accusing Pusztai of using a lectin (Concanavalin A) that was a known toxin. This wasn't true. Pusztai had used the snowdrop lectin, but a gag order prevented him from defending himself publicly until 1999. Pusztai's experiment was eventually published as a letter in
The Lancet in 1999. Because of the controversial nature of his research, the letter was reviewed by six reviewers – three times the usual number. One publicly opposed the letter, another thought it was flawed, but wanted it published "to avoid suspicions of a conspiracy against Pusztai and to give colleagues a chance to see the data for themselves," while the other four raised questions that were addressed by the authors. The letter reported
significant differences between the thickness of the gut
epithelium of rats fed genetically modified potatoes and of rats fed the control diet. For example, too few rats per test group were used to derive meaningful, statistically significant data. He was one of several scientists interviewed in the 2010 documentary
Scientists Under Attack: Genetic Engineering in the Magnetic Field of Money who, based on their findings, have criticized the use of genetic modification for food. ==Aftermath==