What's the difference between i.e. and e.g.?
Jewish surname indicating priestly descent, from Hebrew kohen "priest," from base of kihen "he acted as priest," related to Arabic kahana "he divined, prophesied."
Cohen Co·hen (kō'ən), Stanley. Born 1922.
American biochemist. He shared a 1986 Nobel Prize for the discovery of the epidermal growth factor.