[1] Royal Coll Surgeons Ireland, Physiol, Dublin, Ireland
[2] Royal Coll Surgeons Ireland, Surg, Dublin, Ireland
[3] Harvard Med Sch, Pathol, Boston, MA 02115 USA
[4] Univ Coll Dublin, Pathobiol, Dublin, Ireland
[5] Genentech Inc, Canc Immunol, San Francisco, CA USA
[6] Cyclacel, Res & Dev, Dundee, Scotland
[7] Univ Stuttgart, Cell Biol & Immunol, Stuttgart, Germany