title: Immunological memory and lymphoblast-migration in mice infected with Hymenolepis nana.
abstract: The presence of small cells carrying memory and lymphoblast migration in C57 Bl/6N inbred mice with the intestinal parasite Hymenolepis nana were investigated. Hymenolepis nana egg-infection stimulated an enhanced accumulation of mesenteric lymphoblasts at days 3, 6 and 9 after infection; lymphoblasts accumulated selectively in the mesenteric nodes (MLN) of mice suggesting a cell-trapping effect. The migration was studied using lymphoblasts from non-infected donors. Spleen cells and MLNC collected from donor mice 30 days after a primary infection and enriched for T cells were able to transfer an adoptive immunity, by contrast unseparated cells were uneffective. This result provides preliminary evidence for the existence of T memory cells in the spleen and in the mesenteric nodes.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology; D005260:Female; D006925:Hymenolepiasis / Q000276:immunology*; D006926:Hymenolepis / Q000276:immunology; D007111:Immunity, Cellular; D007116:Immunization, Passive; D007156:Immunologic Memory; D008198:Lymph Nodes / Q000276:immunology; D008213:Lymphocyte Activation; D008643:Mesentery; D051379:Mice; D008810:Mice, Inbred C57BL; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*