Affiliation: | 1.School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TD, UK;2.School of Veterinary Sciences, University of Bristol, Langford, Bristol BS40 5DU, UK;3.Veterinary Pathology, School of Veterinary Science, University of Liverpool, Leahurst Campus, Neston CH64 7TE, UK;4.Present address: Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Winterthurer Strasse 268, 8057 Zurich, Switzerland |