Question

character(s) of acquired immunity is (are)...
1... differentiation between self and non self....

2... specificity of antigen.....

3... retains memory....

4... all the above....
plzz tell me the ri8 option...

Answer 1

The correct answer is 4.

It can differentiate b/w molecules in the body(itslef) and non-self(foreign bodies)...
it can specify the different foreign molecules...

and the memory-(which i guess you would already know)....

Hope it helps...
Regards,
Leukonov.