A molecule that elicits an immune response is called

The term ’active immunity' means

In higher vertebrates, the immune system can distinguish self­cells and non-­self. If this property is lost due to genetic abnormality and it attacks self­cells, then it leads to

Assertion : Interferons are effective against viruses.

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

Immunity tolerance developed by