[1] Univ Edinburgh, Queens Med Res Inst, Ctr Reprod Biol, Edinburgh EH16 4TJ, Midlothian, Scotland
[2] Adv Cell Technol, Worcester, MA 01605 USA
[3] Johns Hopkins Univ, Sch Med, Inst Cell Engn, Baltimore, MD 21205 USA
[4] Univ Edinburgh, Inst Stem Cell Res, Edinburgh EH9 3JQ, Midlothian, Scotland
[5] Univ Cambridge, Inst Stem Cell Biol, Cambridge CB2 1QT, England
[6] ES Cell Int, Singapore 138667, Singapore
[7] Monash Univ, Monash Immunol & Stem Cell Labs, Melbourne, Vic 3800, Australia
[8] Univ Nottingham, Div Biol Sci, Loughborough LE12 5RD, Leics, England