A substance containing weakened or dead microbes, introduced into a healthy person's body to produce antibodies against the disease-causing microbes is known as
A
vaccine
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B
antibiotic
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C
pain killer
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D
antigen
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Solution
The correct option is A vaccine A vaccine is a biological preparation containing weakened or dead microbes which is introduced into a healthy person's body to produce antibodies against the disease-causing microbes. Vaccines can be injected or administered orally.