Biology, asked by Altmaz, 1 year ago

what do you mean by the vaccination? how it provides immunity against diseases ​

Answers

Answered by arbeena75
1

vaccines are used for protection against infection from a particular disease, such as typhoid,cholera and smallpox. A vaccine is suspension of killed pathogenic bacteria. On injecting into the body of Man, it induces formation of antibodies. This provides considerable degree of immunity

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