<prompt> About interferon true is:It is a synthetic antiviral agentInhibits viral replication in cellsIs specific for a particular virusNone  <response>: Ans. is b i.e., Inhibits viral replication in cellsRef: Ananthanarayan, 9the, p. 448 - 449 and 8the, p. 447 - 448 Interferon by itself has no direct action on viruses but it acts on other cells of same species, rendering them refractory to viral infection. On exposure to interferon, cells produce a protein translation inhibiting protein TIP which selectively inhibits translation of mRNA. 