Antigen
By
Cancer Council NSW
Any substance that triggers the body’s immune response against it and prompts the production of antibodies. Antigens can include toxins, chemicals, bacteria, viruses, fungi or other foreign substances.
Body tissues and cells, including cancer cells, can also display antigens that cause an immune response. These antigens can also be used as biomarkers in laboratory tests, helping identify specific tissues or cells, such as cancer cells.
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