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nekit [7.7K]
2 years ago
12

How a vaccine promotes immunity?answer in your own words​

Biology
1 answer:
anygoal [31]2 years ago
8 0

Answer:

Because the vaccine is an antigen from living, weakened or killed microorganisms that activate the immune system and the body produces protective antibodies.

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Which of the following elements has the highest atomic mass?
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I think its A but I'm not sure. 
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2 years ago
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