title: Generation of L3T4-/Ly-2- T cells in Peyer's patches of mice treated with monoclonal antibody against helper T cells.
abstract: The effect of in vivo administration of anti-L3T4 monoclonal antibody on the generation of an L3T4-/Ly-2- (CD4-/CD8-) population of Thy-1.2+ cells was examined in Peyer's patches of mice by two-color flow cytometry. Female BALB/c mice aged 8 wk were given 4-6 weekly injections of either anti-L3T4 (1 mg/wk) or phosphate-buffered saline (control group), and dispersed Peyer's patch cells analyzed for the presence and absence of L3T4 and Ly-2 on Thy-1.2+ cells. In anti-L3T4 treated mice, L3T4-/Ly-2- T cells accounted for 25-30% of the Thy-1.2+ cells, whereas in control mice these cells represented only 3-4% of the T cells. The remaining 70-75% of the Thy-1.2+ cells after anti-L3T4 treatment were Ly-2+ and not L3T4+. The L3T4-/Ly-2- population of Thy-1.2+ cells is a novel subset which has not been previously found in Peyer's patches and is amplified when helper T cells are depleted.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D000945:Antigens, Differentiation, T-Lymphocyte / Q000276:immunology; D000950:Antigens, Ly / Q000276:immunology; D000954:Antigens, Surface / Q000276:immunology; D000961:Antilymphocyte Serum / Q000494:pharmacology*; D005260:Female; D008212:Lymphocyte Depletion; D051379:Mice; D008807:Mice, Inbred BALB C; D010581:Peyer's Patches / Q000166:cytology / Q000276:immunology*; D013601:T-Lymphocytes / Q000145:classification / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*; D018800:Thy-1 Antigens
chemical_list: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte; D000950:Antigens, Ly; D000954:Antigens, Surface; D000961:Antilymphocyte Serum; D018800:Thy-1 Antigens