Michael J. Day BSc BVMS(Hons) PhD DSc DipECVP FASM FRCPathFRCVS Michael qualified as a veterinary surgeon from Murdoch University(Western Australia) in 1982. After a period in small animalpractice he returned to Murdoch to complete a Residency inmicrobiology and immunology, and a PhD involving collaborativeresearch with the Royal Perth Hospital. Michael has heldpostdoctoral positions in experimental immunology at theUniversities of Bristol and Oxford and is currently Professor ofVeterinary Pathology and Director of Diagnostic Pathology atBristol. His research interests cover experimental models ofautoimmunity and a range of companion animal immune-mediated andinfectious diseases. Michael has published widely in the field ofimmunopathology and is currently Editor-in-Chief of the Journal ofComparative Pathology. Barbara Kohn Dr.med.vet. DipECVIM-CA Barbara graduated from LM-University Munich; her doctoral thesis isin veterinary physiology. She worked as an assistant in privatesmall animal clinics and as a resident in small animal internalmedicine at the University of Zurich. At the University ofPennsylvania she did a postdoctoral research fellowship intransfusion medicine and haematology. Since 1996 Barbara has workedat the Freie Universitat Berlin, as a senior lecturer,assistant professor and, since 2003, as Professor of Small AnimalInternal Medicine. Her main areas of research interest includehaematology, transfusion medicine, clinical immunology, infectiousdiseases and gastroenterology. Barbara is co-editor of a standardtextbook on canine diseases and currently Editor of the journalKleintierpraxis.