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antigens

Cultural  
  1. Substances that are foreign to the body and cause the production of antibodies. Toxins, invading bacteria and viruses, and the cells of transplanted organs can all function as antigens.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"It's becoming increasingly clear that many pathogens are able to quickly mutate. Like the proverbial leopard that changes its spots, a virus can change the antigens on its surface," Pulendran said.

From Science Daily • Feb. 23, 2026

Illumination with red light is designed to rupture the cell, releasing cancer antigens that may activate the body’s immune system to fight the cancer.

From The Wall Street Journal • Jan. 8, 2026

The first phase of testing used a vaccine with known antigens designed for melanoma.

From Science Daily • Oct. 13, 2025

"There is really intense immune activation when you treat innate immune cells with this formulation, which triggers these cells to present antigens and prime tumor-killing T cells."

From Science Daily • Oct. 13, 2025

Among the slipperiest of all is AIDS, which evolves new antigens even as it sits within an individual patient, thereby eventually overwhelming his or her immune system.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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