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15.2: Main Functions for Homeostasis

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    The immune system is a main defense mechanism for the body against harmful agents, including many foreign substances, bacteria, parasites, viruses, and its own cancer cells. This system uses different defense strategies against different agents, including blocking their entrance, abolishing those found in the body, and helping neutralize or eliminate undesirable substances produced by invading organisms.

    Therefore, a person's immune system serves like a combination of a nation's agencies for customs and immigration, drug enforcement, and counter-insurgency. Unfortunately, as with such agencies, immune system activities occasionally injure innocent constituents through misidentification or overzealous actions such as autoimmunity and allergy.

    This page titled 15.2: Main Functions for Homeostasis is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Augustine G. DiGiovanna via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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