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.
These chemicals have a similar structure to the molecules our bodies naturally make and operate in the endocannabinoid system, a cellular network that’s involved in regulating sleep, pain, inflammatory and immune responses, and hunger. Sarah Klein, Washington Post, 11 Aug. 2026 Existing strategies for managing dog allergies focus primarily on controlling the body's immune response rather than reducing allergen production at its source, according to the company's August study. Michelle Del Rey, USA Today, 7 Aug. 2026 Moderna's vaccine is deemed safe and effective, eliciting a stronger immune response, especially in those over 50. Arthur L. Kellermann, Forbes.com, 6 Aug. 2026 They will be delivered to the same tissues, trigger similar levels of immune responses and degrade in similar ways. Li Li, The Conversation, 6 Aug. 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 16 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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