1. Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Food Science and Technology Faculty, University of Vigo, Ourense Campus, 32004 Ourense, Spain
2. Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain
3. Laboratory of Immunogenetics, Department of Medical Microbiology and Infection Control, VU University Medical Centre, P.O. Box 7057, 1007 MB Amsterdam, Netherlands
4. Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Level 7W St. Mark’s Hospital, Watford Road, Harrow HA1 3UJ, UK