1. School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, UK
2. Department of Chemistry, University of Dicle, Diyarbakir 21280, Turkey
3. Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, PO Box 413, 405 30 Gothenburg, Sweden
4. Animal Health and Veterinary Laboratories Agency, Weybridge, Surrey KT15 3NB, UK
5. Department of Medical Biochemistry and Biophysics, Umeå University, Umeå 901 87, Sweden