title: Effects of anti-Ia sera on mitogenic responses. III. Mapping the genes controlling the expression of Ia determinants on concanavalin A-reactive cells to the I-J subregion of the H-2 gene complex.
abstract: We have shown that the Ia determinants expressed on nylon wool-purified T lymphocytes reactive to concanavalin A (Con A) in serum-free media are coded in a single I subregion of the H-2 gene complex. This region, I-J, is defined by two pairs of intra-H-2 recombinant haplotypes: H-2t3, H-2t4 and H-2i3, H-2i5, carried by B10.HTT, B10.S(9R), B10.A(3R), AND B10.A(5R), respectively. No activity against Con A-reactive T cells has been detected in any antiserum that was produced in strain combinations which shared a common I-J region. This suggests that Ia antigens expressed on Con A-reactive T cells are restricted to the I-J subregion.
mesh_terms: D000818:Animals; D000906:Antibodies; D002874:Chromosome Mapping; D003208:Concanavalin A / Q000494:pharmacology; D000939:Epitopes; D005796:Genes; D006649:Histocompatibility Antigens; D008213:Lymphocyte Activation; D051379:Mice; D011995:Recombination, Genetic; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000906:Antibodies; D000939:Epitopes; D006649:Histocompatibility Antigens; D003208:Concanavalin A