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.
Normal mtROS signaling orchestrates many essential cellular and tissue functions, from immune responses to brain function. Hannah Millington, MSNBC Newsweek, 12 Sep. 2025 Joks emphasizes that the nasal spray shouldn’t replace getting a COVID vaccine, which boosts the body’s immune response to prevent an infection from taking hold and causing serious illness. Tom Gavin, EverydayHealth.com, 11 Sep. 2025 Additionally, vaccines given today contain far fewer antigens – that is, substances that trigger an immune response in the body – than vaccines did decades ago. ABC News, 10 Sep. 2025 How creatine works Creatine plays an essential support role in energizing the cells for brain activity, muscle contractions, and even immune responses. Matt Fuchs, Time, 2 Sep. 2025 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 Sep. 2025.

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

Last Updated: - Updated example sentences
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