title: Secondary delayed-type hypersensitivity to sheep red blood cells and minor histocompatibility antigens in mice: transfer of memory by recirculating thoracic duct lymphocytes.
abstract: Secondary delayed-type hypersensitivity (DTH) in mice to sheep red blood cells (SRBC) and minor histocompatibility (H) antigens is dependent on long-lived memory T cells. In this paper we investigated whether these memory T cells recirculate. It was shown that late phase "immune' thoracic duct lymphocytes (TDL) from mice which were immunized with SRBC or non-H-2-incompatible spleen cells several weeks previously could adoptively transfer secondary DTH to these antigens. Passing the immune TDL through intermediate recipients demonstrated that these SRBC- or minor H-antigen-reactive memory T cells recirculate from blood to lymph. In contrast to mice immunized with minor H antigens, no secondary type DTH reactivity could be demonstrated in mice immunized with H-2-incompatible spleen cells. Also, after adoptive transfer of TDL from mice immunized with H-2-alloantigens, it was impossible to demonstrate an accelerated DTH reactivity.
mesh_terms: D000818:Animals; D002465:Cell Movement; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology*; D005260:Female; D006183:H-2 Antigens / Q000235:genetics / Q000276:immunology; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D007116:Immunization, Passive; D007156:Immunologic Memory; D007519:Isoantigens / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D008912:Minor Histocompatibility Loci; D013601:T-Lymphocytes / Q000276:immunology* / Q000502:physiology; D013897:Thoracic Duct / Q000166:cytology
chemical_list: D000939:Epitopes; D006183:H-2 Antigens; D007519:Isoantigens