immune response

noun

: a bodily response to an antigen that occurs when lymphocytes identify the antigenic molecule as foreign and induce the formation of antibodies and lymphocytes capable of reacting with it and rendering it harmless

called also immune reaction

Examples of immune response in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Because itching is often triggered by histamine (a chemical in the body associated with immune responses), dermatologists had reason to think that antihistamines could effectively subdue the itching caused by eczema. Rob Williams, EverydayHealth.com, 30 July 2026 Chronic stress can affect sleep, blood pressure, immune response and mental health. Aisha Nyandoro, Forbes.com, 29 July 2026 However, the agency noted that the peptide poses the risk of a potentially dangerous immune response. Amber Raiken, Verywell Health, 29 July 2026 Inflammation Goes Down While some inflammation is a healthy and normal immune response, chronic inflammation (lasting for months to years) can damage the cells in your body and increase your risk of several conditions. Maggie O'Neill, Health, 25 July 2026 See All Example Sentences for immune response

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of immune response was in 1923

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Cite this Entry

“Immune response.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immune%20response. Accessed 5 Aug. 2026.

Kids Definition

immune response

noun
: a bodily response to a foreign substance, cell, or tissue that involves the formation of antibodies and cells capable of reacting with it and rendering it harmless

called also immune reaction

Medical Definition

immune response

noun
: a bodily response to an antigen that occurs when lymphocytes identify the antigenic molecule as foreign and induce the formation of antibodies and lymphocytes capable of reacting with it and rendering it harmless

called also immune reaction

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