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tekilochka [14]
3 years ago
11

Akio just got over having the flu. His brother just got the flu. His parents are not worried about Akio getting it again because

he built up an immunity to this flu strain. Which explains the type of immunity he built up?
Chemistry
2 answers:
AleksandrR [38]3 years ago
8 0

Answer:

active because he built up antibodies due to exposure to the flu

Explanation:

kozerog [31]3 years ago
8 0

Answer:

A

Explanation:

have a nice day

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