. Vaccines are made up of: a) Chemicals b) Weak microorganisms c) Viruses d) Drugs
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Answered by
3
Answer:
weak microorganisms
Explanation:
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Answered by
1
Answer:
b) Weak Microorganisms
Explanation:
Vaccines are made by taking viruses or bacteria and weakening them so that they can't reproduce (or replicate) themselves very well or so that they can't replicate at all.
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