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.
And since roughly 70% of your immune system lives in your gut, a healthier microbiome means your immune response gets more balanced over time. Allison Palmer, Charlotte Observer, 9 Apr. 2026 How Zinc and Echinacea Affect Your Immune System The mineral zinc is involved in both the body's general immune responses (the innate immune system) and the specialized defenses the body develops after exposure to specific germs (the adaptive immune system). Megan Nunn, Verywell Health, 8 Apr. 2026 In reports up to 158 pages long, the agency detailed the science behind the immune response risk in synthetic peptides, listed documented adverse events associated with the drugs and summarized the limited research on human subjects. Anjeanette Damon, ProPublica, 3 Apr. 2026 And some evidence suggests having more side effects may be associated with a stronger immune response. Meghan Bartels, Scientific American, 27 Mar. 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 14 Apr. 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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