Michael J. Day BSc BVMS(Hons) PhD DSc DipECVP FASM FRCPath FRCVS Michael qualified as a veterinary surgeon from Murdoch University (Western Australia) in 1982. After a period in small animal practice he returned to Murdoch to complete a Residency in microbiology and immunology, and a PhD involving collaborative research with the Royal Perth Hospital. Michael has held postdoctoral positions in experimental immunology at the Universities of Bristol and Oxford and is currently Professor of Veterinary Pathology and Director of Diagnostic Pathology at Bristol. His research interests cover experimental models of autoimmunity and a range of companion animal immune-mediated and infectious diseases. Michael has published widely in the field of immunopathology and is currently Editor-in-Chief of the Journal of Comparative Pathology. Barbara Kohn Dr.med.

vet. DipECVIM-CA Barbara graduated from LM-University Munich; her doctoral thesis is in veterinary physiology. She worked as an assistant in private small animal clinics and as a resident in small animal internal medicine at the University of Zurich. At the University of Pennsylvania she did a postdoctoral research fellowship in transfusion medicine and haematology. Since 1996 Barbara has worked at the Freie Universität Berlin, as a senior lecturer, assistant professor and, since 2003, as Professor of Small Animal Internal Medicine. Her main areas of research interest include haematology, transfusion medicine, clinical immunology, infectious diseases and gastroenterology. Barbara is co-editor of a standard textbook on canine diseases and currently Editor of the journal Kleintierpraxis.