Overview of the immune system and immunodeficiency diseases.
The principal role of the immune system is the protection of the host against invasion by infectious disease agents and other substances considered foreign to the host. The term "immunity" refers to all the mechanisms that the body uses to protect itself against environmental antigens. This article gives an overview of the immune system and its defense immunodeficient diseases.
Department of Clinical Immunology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia.
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Felsburg
D000818:Animals; D002371:Cat Diseases / Q000276:immunology*; D002415:Cats; D016207:Cytokines / Q000502:physiology; D004283:Dog Diseases / Q000276:immunology*; D004285:Dogs; D006967:Hypersensitivity / Q000276:immunology / Q000662:veterinary; D007107:Immune System / Q000502:physiology*; D007110:Immunity, Active; D007113:Immunity, Innate; D007153:Immunologic Deficiency Syndromes / Q000276:immunology / Q000662:veterinary*
D016207:Cytokines