title: Ly-1 inducer and Ly-1,2 acceptor T cells in the feedback suppression circuit bear an I-J-subregion controlled determinant.
abstract: An I-J-subregion controlled determinant is expressed on Ly-1 inducer and Ly-1,2 acceptor T cells in the feedback suppression circuit. Ly-1 T cells absorb the I-J antibody reactive with the Ly-1,2 acceptor T cell, suggesting that both inducer and acceptor T cells have the same I-J determinant. Since less than 10 percent of Ly-1 or Ly-1,2 T cells are killed by anti-I-J plus complement treatment, the I-J determinant demarcates functionally distinct subsets of both the Ly-1 and Ly-1,2 T-cell sets. This I-J determinant is not expressed on a detectable number of Ly-1 helper T cells which induce B lymphocytes to produce anti-sheep red cell antibody in tissue culture.
mesh_terms: D000818:Animals; D000950:Antigens, Ly / Q000235:genetics*; D000939:Epitopes / Q000235:genetics; D005246:Feedback; D000949:Histocompatibility Antigens Class II / Q000235:genetics; D007125:Immunogenetics; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology
chemical_list: D000950:Antigens, Ly; D000939:Epitopes; D000949:Histocompatibility Antigens Class II; C043911:I-J-antigen