Question

What are vaccines?

PLz do not give google answer as it is too long. A short one would be more appriciated.

Answer 1

Answer:

vaccines are the small amount of dead or weak organism which causes disease

Explanation:

so that the immune system recognise and produce antibodies against it

Answer 2

Answer:

Vaccines are like a training course for the immune system. They prepare the body to 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.

Explanation:

copied from my genius father

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