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melisa1 [442]
3 years ago
12

PLSSS HELP GIVING BRAINLIEST

Biology
2 answers:
Inessa [10]3 years ago
7 0

Answer: A

Explanation: Vaccines create memory cells with a weak version of the pathogen, so when they meet that pathogen again the body can respond more quickly and more efficiently since they have already been exposed to the pathogen.

guapka [62]3 years ago
5 0

Answer:

D

Explanation:

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