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Because those defences stay in the body afterwards, the injection given is called a:

AVaccine
BVacuum
CVarnish
DVanguard
Answer & Solution
Correct answer: A. Vaccine
1. Protection lasts long after the injection. 2. The person never suffers the full disease. 3. That injection is a vaccine. _Source: syllabus Science Class VIII, Chapter 2, Microorganisms: Friend and Foe._
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