2 years ago

21. Cells of the immune system are able to respond to the presence of

Biology

1 answer:

ratelena [41]2 years ago

8 0

Answer:

1. antigens present on the invaders

Explanation:

Through the antigens present to the invaders the Cells of the immune system can easily able to respond and recognize. During an infection, chemical signals attract phagocytes to places where the pathogen has invaded the body.

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