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Please heip i am giving away brainiliest for the best answer

Which substance produced by the immune system is involved in both active and passive immunity?


A. antibiotic


B. antibody


C.vaccine


d. mucus



no dam links

User Allon
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2 Answers

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Answer:

B. Antibody

Step-by-step explanation:

Trust me I've learned this is middle school

User Ankit Rawat
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Answer: b

Step-by-step explanation:

User Jxstanford
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