“…Depleting CD4 T cells from the transferred cells has little eVect on control of infection and none on the prevention of lethal disease [14,45]. Transferring CD8 T cells alone is as eVective in reducing lung, adrenal gland, and spleen titres as transferring both subsets [40,41,43,45,46]. Depleting CD8 T cells, however, or CD4 and CD8 T cells, results in organ immunopathology, virus replication in all organs tested, and 100% lethality [40,45].…”