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

Overview of Vaccines and Immunotherapy

By Ian Tizard, BVMS, PhD, DACVM, Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University ; Susan L. Payne, PhD, Texas A&M University

The adaptive immune system responds to microbial invasion by producing protective antibodies or cell-mediated immunity, or both. Appropriate administration of specific microbial antigens, as in a vaccine, can provoke effective, longterm resistance to infection. Conserved microbial molecules can also stimulate the development of innate immune responses. This too enhances resistance to infection and may be clinically useful.