the weakened disease causing microorganisms injected into bodies are called
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The correct option is A vaccine. A vaccine is a biological preparation containing weakened or dead microbes which are introduced into a healthy person's body to produce antibodies against the disease-causing microbes. Vaccines can be injected or administered orally.
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A vaccine. A vaccine is a biological preparation containing weakened or dead microbes which are introduced into a healthy person's body to produce antibodies against the disease-causing microbes. Vaccines can be injected or administered orally
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