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Crazy boy [7]
2 years ago
7

PLEASEEEE HELPPP ASAPPPP :))

Biology
1 answer:
Oksanka [162]2 years ago
8 0

Answer: Check for the presence of antibodies in the blood

Explanation:

A person can only have antibodies for a virus if they got the virus in the first place

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i can only define the terms for you.

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