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

Hoeg noted that with fewer vaccines, there’s less exposure to aluminum, which is used as an adjuvant — an ingredient added to create a stronger immune response. —Adam Cancryn, CNN Money, 19 Dec. 2025

At the same time, the bacterial invasion triggered a natural immune response, and the tumors soon became flooded with immune cells – particularly neutrophils, and T and B cells – alongside increases in inflammatory signaling molecules. —New Atlas, 16 Dec. 2025

Sugary drinks can weaken your immune response and increase inflammation, which may slow recovery, Ednie said. —Andrea Margolis, FOXNews.com, 11 Dec. 2025

Researchers pinpointed key immune response activity triggered by mRNA COVID vaccines that appears to temporarily damage heart tissue at high enough concentrations. —Lauren J. Young, Scientific American, 10 Dec. 2025

Word History

First Known Use

1923, in the meaning defined above

Rhymes for immune response

• bons
• hans
• launce
• nonce
• sconce
• esperance
• nonchalance
• nonresponse
• renaissance
• naissance

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