Mealey's (February 10, 2020, 1:12 PM EST) -- COLUMBUS, Ohio — A federal judge in Ohio on Feb. 7 ruled that E.I. du Pont de Nemours & Co.’s expert may not modify his testimony in a trial over cancer allegedly caused by perfluorooctanoic acid (known as C8) contamination in groundwater, but he is allowed to testify that the plaintiff’s expert did not properly account for other factors that affected the plaintiff’s health (In re: E.I. du Pont de Nemours and Co. C8 Personal Injury Litigation, MDL No. 2433, No. 13-2433, S.D. Ohio, 2020 U.S. Dist. LEXIS 21793)....