The function of vaccine is the production and storage of
Antigens
Immune bodies
Immune reactions
Antibodies
What plays an important role in primary and secondary response?
Lacking of $B$-cells and $T$-cells is known as
Active immunity is obtained by
Assertion $(A)$ : Antigen can be easily recognized because it has antigenic determinants.
Reason $(R)$ : The recognition ability is innate.
Assertion : Interferons are effective against viruses.
Reason : Proteins which can be synthesized only by genetic engineering are effective against viruses.