Antigen - Definition


Antigens are molecules recognized as foreign bodies that can be present during contamination by viral, fungal, or bacterial germs, a toxin, or a cancerous disease. Their presence in a cell creates a reaction from the body once they are recognized; the making of antibodies enables the body to fight and destroy these antigens. Antigens then provoke an immune reaction. The lymphocytes B and T, white blood cells, also recognize antigens. Antigens are also responsible for allergic reactions.
Original article published by Jeff. Translated by Jeff. Latest update on October 28, 2016 at 06:33 AM by MarziaChiriatti.
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