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The Department of Pathobiology is dedicated to the advancement of knowledge in veterinary and comparative pathology, veterinary infectious diseases and immunology. Our faculty members’ research ranges from the basic understanding of the mechanisms of disease caused by a wide range of agents (including emerging and zoonotic pathogens) to the different protective and pathological responses o host organisms. We offer advanced training in diagnostic anatomic and clinical pathology, as well as research training in our areas of expertise.



We are excited to announce that Dr. Leonardo Susta, Avian Health and Disease, will join the department on October 1st. We’ll have a bio and photo in the October Newsletter.

Dr. Stefan Keller, Anatomic Pathologist Candidate, will be visiting the department with his family from Sept. 23-25, please email Elizabeth Gilbertson,, if you would like to meet with Stefan during this time.


Congratulations to Pathobiology staff who were honoured for their outstanding service at the Welcome Breakfast on Sept 3; Betty-Anny McBey has been with the university for 25 years, and Donna Kangas has been with the university 35 years.

Dr. Andrew Peregrine has been named the President of the American Association of Veterinary Parasitologists until August 2015.  He was also coordinator, moderator (referee) at the AACP/NCVP meeting in Denver, from July 26-29.

Congratulations to Monica Baquero, PhD candidate with Drs. Brandon Plattner and John Prescott, has been awarded a prestigious Vanier scholarships worth $50,000 a year for three years to study “Modulation of immunity by bovine gamma-delta T lymphocytes during early and subclinical Mycobacterium avium subspecies paratuberculosis (Map) infection”. Read the @Guelph article at  “#vaniercanada”

Congratulations to the following Pathobiology summer students for their excellent poster presentations to wrap up the Summer Leadership and Research Program (SLPR):  First Place:  Daniel Kim [Darren Wood], “A retrospective evaluation of thrombomodulin expression in tissues from dogs with systemic inflammatory disease” and Chanel Schwartzentruber [Andrew Peregrine], “Evaluating the accuracy and reliability of the FAMACHA© eye colour chart in sheep using different light sources”; Second Place:  Ceilidh  Barlow-Cash [Bonnie Mallard], “Evaluating macrophage activity of Canadian dairy cows characterized by an imbalanced adaptive immune response phenotype” and Fernando  Salgado-Bierman [Nicole Nemeth], “Raptor mortality in Ontario”; Third Place:  Robert Mould [Byram Bridle], “Combining antigen presenting cell-based vaccination with oncolytic viruses for the treatment of prostate cancer” and Joseph Okudolo [Bonnie Mallard], “Differences in monocyte-derived macrophage activity between Canadian Holstein dairy cows classified as high and low immune responders”.