how does a vaccine work inside of our body?
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Vaccines are like a training course for the immune system. They prepare the bodyto fight disease without exposing it to disease symptoms. When foreign invaders such as bacteria or viruses enter the body, immune cells called lymphocytes respond by producing antibodies, which are protein molecules.
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when a vaccine is given which contains weak micro-organisms, our body learn to fight them by producing antibiotics whenever danger comes .when the diseases causing microorganisms enter in our body, the already present antibiotics fight and eliminate them and the diseases is controlled. the weekend disease causing microorganisms which are injected into our bodies are called vaccine
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