The article profiles the works of toxicologist Perry J. Gehring of Dow Chemical Co. and Dow AgroSciences LLC. It states that Gehring has earned his degree of doctor of veterinary medicine and doctorate degree in pharmacology at the University of Minnesota. It mentions that he served as president of the Society of Toxicology from 1980 to 1981 and president of the International Union of Toxicology from 1986 to 1989.