title: Heterogeneity and specificity of cloned lines of influenza-virus specific cytotoxic T lymphocytes.
abstract: Continuous lines of murine cytotoxic T lymphocytes (CTL) directed to type A influenza viruses have been generated in vitro by stimulation of individual CTL precursors in the presence of T cell-growth factor TCGF and syngeneic virus-infected stimulator cells. The cloned CTL lines are H-2 restricted in their target cell recognition and exhibit distinct patterns of influenza virus recognition. All CTL lines appear to be restricted in target cell recognition to either the H-2K or the H-2D end of the appropriate H-2 haplotype. Likewise, CTL lines of F1 origin are restricted in recognition exclusively to one of the parental haplotypes. All CTL lines examined express the Thy-1.2 and the Lyt-2-surface antigen markers. 4 of 11 cytotoxic lines examined also expressed detectable levels of the Lyt-1- surface antigen. These findings confirm at the clonal level previous observations on the H-2K/D restriction of virus-specific CTL and also demonstrate heterogeneity among H-2 restricted CTL both from the standpoint of viral antigen recognition and cell surface phenotype.
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000276:immunology; D002999:Clone Cells / Q000276:immunology; D003602:Cytotoxicity, Immunologic; D000939:Epitopes; D006183:H-2 Antigens / Q000276:immunology; D009980:Influenza A virus / Q000276:immunology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D009976:Orthomyxoviridae Infections / Q000276:immunology*; D010641:Phenotype; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000954:Antigens, Surface; D000939:Epitopes; D006183:H-2 Antigens