title: Suppression of natural killer cell activity by Friend murine leukemia virus.
abstract: BALB/c mice infected with Friend murine leukemia virus (F-MuLV) evinced a decreased natural killer (NK) cell activity to susceptible target cells. This suppression increased as the interval between infection and assay was lengthened. The decrease in NK activity due to F-MuLV infection was partially reversible when spleen cells were pretreated with interferon before the cytolytic assay. The ability of F-MuLV-infected splenocytes to bind to target cells was unaltered, indicating that the defect was in the lytic phase of NK cytolysis. When mixed with uninfected spleen cells, F-MuLV-infected splenocytes suppressed their NK cell activity. This suppression was associated with a nylon wool-adherent cell population in the F-MuLV-infected spleens.
mesh_terms: D000818:Animals; D002460:Cell Line; D002478:Cells, Cultured; D003601:Cytotoxicity Tests, Immunologic; D005622:Friend murine leukemia virus / Q000276:immunology*; D007108:Immune Tolerance; D007372:Interferons / Q000276:immunology; D007694:Killer Cells, Natural / Q000276:immunology*; D007942:Leukemia, Experimental / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D013154:Spleen / Q000276:immunology; D013997:Time Factors
chemical_list: D007372:Interferons