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cupoosta [38]
3 years ago
5

What is an antigen?

Biology
1 answer:
Virty [35]3 years ago
5 0

Answer:

In immunology, an antigen is a molecule or molecular structure, such as may be present on the outside of a pathogen, that can be bound by an antigen-specific antibody or B-cell antigen receptor. The presence of antigens in the body normally triggers an immune response.

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