1. Program in Molecular Medicine, UMASS Chan Medical School, Worcester, Massachusetts, USA
2. M.H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
3. Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, USA
4. U.S. Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal and Parasitic Diseases Laboratory, Beltsville, Maryland, USA
5. U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Diet, Genomics and Immunology Laboratory, Beltsville, Maryland, USA