immune system
noun
: the bodily system that protects the body from foreign substances, cells, and tissues by producing the immune response and that includes especially the thymus, spleen, lymph nodes, special deposits of lymphoid tissue (as in the gastrointestinal tract and bone marrow), macrophages, lymphocytes including the B cells and T cells, and antibodies
Examples of immune system in a Sentence
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Lymphoma is a type of cancer that starts in the lymphatic system, which is part of the body's immune system.
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Gagandeep Brar, Verywell Health, 28 Feb. 2025
But as mice get older, their fat tissue makes less proteins that help the body's immune system fight infection and inflammation (CX3CL1), which leads to lower levels of BDNF, a protein in the brain that helps nerve cells survive and grow.
—Dan Perry, Newsweek, 28 Feb. 2025
Due to microgravity, radiation and physiological stress, immune systems have to work harder in space to overcome infections.
—Sara Hashemi, Smithsonian Magazine, 28 Feb. 2025
These include exposure to microgravity and radiation that affect their immune responses; a human body with a healthy immune system needs to work harder in space to overcome the same infection that'd be relatively easier to fight off on Earth, according to NASA research.
—Sharmila Kuthunur, Space.com, 28 Feb. 2025
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Gagandeep Brar, Verywell Health, 28 Feb. 2025
But as mice get older, their fat tissue makes less proteins that help the body's immune system fight infection and inflammation (CX3CL1), which leads to lower levels of BDNF, a protein in the brain that helps nerve cells survive and grow.
—Dan Perry, Newsweek, 28 Feb. 2025
Due to microgravity, radiation and physiological stress, immune systems have to work harder in space to overcome infections.
—Sara Hashemi, Smithsonian Magazine, 28 Feb. 2025
These include exposure to microgravity and radiation that affect their immune responses; a human body with a healthy immune system needs to work harder in space to overcome the same infection that'd be relatively easier to fight off on Earth, according to NASA research.
—Sharmila Kuthunur, Space.com, 28 Feb. 2025
See All Example Sentences for immune system
Cite this Entry
“Immune system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immune%20system. Accessed 12 Mar. 2025.
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