nonspecific immunity

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nonspecific immunity

biology

Also known as: innate immunity, natural immunity, nonspecific, innate immunity(Show More)

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July 1, 2026

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Nonspecific immunity, also known as innate immunity, is the body's first line of defense against a broad range of pathogens like viruses, bacteria, and fungi. It's present from birth and acts without prior exposure to a specific invader.123

This defense system includes physical barriers like skin and chemical barriers such as antimicrobial proteins. If pathogens breach these, the innate immune system employs rapid responses like inflammation and the acute-phase response. Inflammation involves redness, swelling, and fever, bringing immune cells to the site of infection. The acute-phase response, triggered by signals like interleukins, can raise body temperature and release proteins that help destroy a wide range of microorganisms. Unlike acquired immunity, innate immunity does not provide lasting protection against specific pathogens.1453

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immune system
Nonspecific, innate immunity
Most microorganisms encountered in daily life are repelled before they cause detectable signs and symptoms of disease. These potential pathogens, which include viruses, bacteria, fungi, protozoans, and worms, are quite diverse, and therefore a nonspecific defense system that
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Most microorganisms encountered in daily life are repelled before they cause detectable signs and symptoms of disease. These potential pathogens, which include viruses, bacteria, fungi, protozoans, and worms, are quite diverse, and therefore a nonspecific defense system that
Read More

Bruce A. Beutler
” The innate immune system is the body’s first line of defense against infection by potential pathogens (disease-causing entities), which include viruses and bacteria.
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” The innate immune system is the body’s first line of defense against infection by potential pathogens (disease-causing entities), which include viruses and bacteria.
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disease
Immunity
…there are two types: nonspecific, innate immunity and specific, acquired immunity. Innate immunity, with which an organism is born, involves protective factors, such as interferon, and cells, such as macrophages, granulocytes, and natural killer cells, and its action does not depend on prior exposure to a pathogen. Specific immunity is…
Read More
…there are two types: nonspecific, innate immunity and specific, acquired immunity. Innate immunity, with which an organism is born, involves protective factors, such as interferon, and cells, such as macrophages, granulocytes, and natural killer cells, and its action does not depend on prior exposure to a pathogen. Specific immunity is…
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Jules Hoffmann
…relating to the activation of innate immunity (the first line of defense against infection) in the fly Drosophila. Hoffmann’s work provided a vital foundation for subsequent breakthroughs in scientists’ understanding of mammalian immunity.
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…relating to the activation of innate immunity (the first line of defense against infection) in the fly Drosophila. Hoffmann’s work provided a vital foundation for subsequent breakthroughs in scientists’ understanding of mammalian immunity.
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immunity
Innate immunity consists of defense mechanisms present at birth that act against a broad range of infectious agents, regardless of whether the body has encountered them before. The mechanisms include physical barriers, such as the skin, and chemical barriers, such as antimicrobial enzymes in saliva.…
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Innate immunity consists of defense mechanisms present at birth that act against a broad range of infectious agents, regardless of whether the body has encountered them before. The mechanisms include physical barriers, such as the skin, and chemical barriers, such as antimicrobial enzymes in saliva.…
Read More