meaning of vaccine in biology
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Vaccine is a substance given to stimulate the body's production of antibodies and provide immunity against a disease without causing the disease itself in the treatment, prepared from the agent that causes the disease.
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mjbaig1:
A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.
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It is an antigenic substance prepared from causitive agent of disease or synthetic substitute,used to improve immunity against one or several diseases
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