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Endogenous antigen

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Definition

noun

Antigen that is produced from within the cell as part of normal cell metabolism or when the cell is infected by bacteria or viruses.


Supplement

For instance, when the virus infects the cell, antigens are formed and presented on the surface of the cell.


Word origin: Greek éndon (within) + French -gène, -gen (yielding, producing) + antigen.

Compare: exogenous antigen
See also: antigen