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Find information on animal health topics, written for the veterinary professional.

* This is the Veterinary Version. *

The Immune System of Dogs

By Christine Andreoni, , Senior Manager, Department of Immunology, Discovery Merial Limited ; Kevin T. Schultz, DVM, PhD, Chief Scientific Officer, Head of Global Research and Development, Merial Limited

Also see professional content regarding the immune system.

The immune system consists of a network of white blood cells, antibodies, and other substances that fight off infections and reject foreign proteins. In addition, the immune system includes several organs. Some, such as the thymus gland and the bone marrow, are the sites where white blood cells are produced. Others, including the spleen, lymph nodes, and liver, trap microorganisms and foreign substances and provide a place for immune system cells to collect, interact with each other and with foreign substances, and generate an immune response.

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Also see professional content regarding the immune system.

* This is the Veterinary Version. *