Question

Define vaccines in biology​

Answer 1

Explanation:

A vaccine is a biological preparation that provides active acquired immunity to a particular infectious 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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Answer 2

Answer:

a preparation usually containing killed and weakened microorganisms to increase protection against a particular disease ..