A molecule that stimulates production of an antibody or are recognised by an antibody. Antigens are often proteins, but e.g. carbohydrates, DNA and other molecules (hormones, toxins) can also function as antigens.
Adapted from: Tronsmo, A.M., Collinge, D.B., Djurle, A., Munk, L., Yuen, J. and. Tronsmo, A. 2020 Plant pathology and plant diseases. CABI, Wallingford.
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