BLACKSBURG, Virginia, Oct. 13 -- Virginia Tech issued the following news: Bernard Jortner, a Virginia Tech professor emeritus who was an internationally known researcher in neurotoxicology and founding president of the Virginia-Maryland College of Veterinary Medicine faculty association, died on Sept. 28 at the age of 90. Jortner was a professor of biomedical sciences and pathobiology in the veterinary college before being conferred emeritus status upon his retirement in 2010. He had been asso  more