TNF and retinitis: Although the MCMV-infected eyes of mice with MAIDS deficient in TNF-a or TNFR1 showed decreased frequencies of retinitis when compared with the MCMV-infected eyes of wildtype mice, intraocular amounts of infectious virus remained the same for these MAIDS mice also deficient in the extrinsic apoptotic pathway when compared with wildtype MAIDS mice.