Question

4) What are vaccines? How does a vaccine work in treating diseases?

Answer 1

Answer:

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Answer 2

Answer:

A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface s

so to kills those weakened microbe our body get started producing antibodies to kill them so the white blood cells(lymphocytes) memorizes them and in case if those microbes attack our body after vaccination induced in our body so our WBCs quickly recognized them and frequently kill them.