<prompt> Answer this question truthfullyWhat is the relationship between IFN-y and inducible nitric oxide synthase iNOS?  <response>: <reason> IFN-y upregulates production of inducible nitric oxide synthase iNOS. iNOS is an enzyme that is involved in the generation of ONOO- a powerful free radical. This relationship between IFN-y and iNOS is important in the immune response to infections and cancer, as well as in the pathogenesis of certain inflammatory diseases. 