 In 2007, 2009, and 2011, Gilles-Éric Séralini published re-analysis studies that used data from Monsanto rat-feeding experiments for three modified maize varieties (insect-resistant MON 863 and MON 810 and glyphosate-resistant NK603).He concluded that the data showed liver, kidney and heart damage.The European Food Safety Authority (EFSA) then concluded that the differences were all within the normal range.