1. Signalling Programme, The Babraham Institute, Babraham Research Campus, Cambridge, CB22 3AT, U.K.
2. Proteomics Group, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, U.K.
3. AstraZeneca, Alderley Park, Macclesfield, Cheshire SK10 4TG, U.K.