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antigens

Cultural

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.

One side displays adjuvant molecules arranged at carefully controlled nanometer distances, while the opposite side presents selected antigens such as peptides or proteins from tumors or pathogens.

From Science Daily • Mar. 17, 2026

When they detect danger, they process fragments of abnormal proteins and present them as antigens to T cells, which then seek out and destroy diseased or cancerous cells.

From Science Daily • Jan. 16, 2026

Despite improvements in identifying suitable cancer antigens, these vaccines often fail to perform as hoped.

From Science Daily • Jan. 16, 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

Malaria and sleeping sickness are even more slippery customers in their ability rapidly to change their antigens.

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023