What is vaccination ? Who gave this idea ?

Who discovered vaccination?

Who gave the term cell?

What is meant by 'contagium vivum fluidum'? Who gave this idea?

(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 ?

Who gave Atomic theory ?

Who gave the octet rule?

Bohr's atomic theory gave the idea of :

Bohr's atomic theory gave the idea of :