Which one of the following is not correctly matched?

During an allergic reaction, the binding of antigens to IgE antibodies initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are

 Give scientific reasons : Hepatitis $B$ and Bird flu $DNA$ vaccines are called Recombinant $DNA$ vaccines.

The final stage of drug addiction is represented by the need of drug for the body. This is known as

Assertion: Epstein-Barr virus is an oncovirus.

Reason: It stimulates the growth of cancer.