immune systems

• plural

  plural

  The grammatical form denoting more than one person, place, thing, or idea.

  of immune system.
  immune system

  noun

  a diffuse, complex network of interacting cells, cell products, and cell-forming tissues that protects the body from pathogens and other foreign substances, destroys infected and malignant cells, and removes cellular debris: the system includes the thymus, spleen, lymph nodes and lymph tissue, stem cells, white blood cells, antibodies, and lymphokines.

Example Sentences

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immune systems

Studying how their immune systems have survived and adapted over hundreds of millions of years could offer useful clues for modern medicine.

From Science Daily ● Aug. 5, 2026

According to the CDC, most people with healthy immune systems recover from cyclosporiasis without treatment.

From MarketWatch ● Jul. 9, 2026

If there is any action people with vulnerable immune systems should take as a result, it’s to continue reasonable precautions against viral infections of all kinds.

From Los Angeles Times ● Jun. 15, 2026

The real test, he says, is what happens in the human trials as our immune systems are different to laboratory mice as ours have been shaped by years of infections.

From BBC ● Jun. 4, 2026

He detected no respiratory infection but prescribed shots of liver and placenta extract, a novel therapy for weakened immune systems.

From "Big Science" by Michael Hiltzik

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