The CD4+ T cell response to the MCMV m09133-147 epitope (here referred to as m09) was described as inflationary with 0.11–0.21% of the peripheral CD4+ T cell population producing IFNγ in response to m09 stimulation in persistently infected animals (days 40–100 post-infection) [27]. The gene discussed is CD4; the disease is infection.