" Explain the meaning of vaccination."

Explain the importance of vaccination ?

Explain the following : Vaccination.

Explain the following: (i) Vaccination (ii) Autoimmune diseases.

Vaccine

Vaccine

Explain the mechanism of functioning of vaccines.

What is vaccine? Describe the importance of vaccination.

(a) What are antibiotics ? Name the scientist who first discovered antibiotics. Also give name of this antibiotics. (b) What do you mean by vaccination ? Who first conceived the idea of vaccination ?