Groups of defense mechanism of the body

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What are the two groups of defense mechanism of the body against foreign or harmful agents? What is the difference between them? How can the immune memory lead to the efficacy of vaccines and also produce allergies?

Reference no: EM131325560

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Groups of defense mechanism of the body : What are the two groups of defense mechanism of the body against foreign or harmful agents? What is the difference between them? How can the immune memory lead to the efficacy of vaccines and also produce allergies?
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