Authors: Junying Yu; Maxim A Vodyanik; Kim Smuga-Otto; Jessica Antosiewicz-Bourget; Jennifer L Frane; Shulan Tian; Jeff Nie; Gudrun A Jonsdottir; Victor Ruotti; Ron Stewart; Igor I Slukvin; James A Thomson Journal: Science Date: 2007-11-20 Impact factor: 47.728