After vaccination,the dose given for the immunization is known as

Assertion: Interferons are effective against viruses.
Reason: Proteins which can be synthesized only by genetic engineering are effective against viruses.

An antibody is a

Choose the true statements.
$I.$ Innate immunity is accomplished by providing different types of barriers.
$II.$ Acquired immunity is present from birth and is inherited from parents.
$III.$ Sweat,tears,acid in the stomach,and saliva prevent microbial growth.

The antibodies are produced by the

Antibodies produced by $B$-lymphocytes are responsible for: