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Misha Larkins [42]
3 years ago
6

Cells of the immune system are able to respond to the presence of invading organisms because they recognize the

Biology
1 answer:
Ludmilka [50]3 years ago
3 0
They are able to respond to the presence of invading organisms because they recognize the<u> antigen </u>on the surface of organisms. There are specific receptors on the surface of immune system cells.
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