title: Expression of individual Ia specificities on T and B cells. I. Studies with mitogen-induced blast cells.
abstract: Ia specificities 1-10 were detected on LPS-stimulated splenic lymphocytes and on Con A-stimulated spleen, lymph node, and thymus blasts by direct cytotoxic tests. Since Ia antigens are not readily detectable on resting thymocytes, our results suggest that T cells require some signal before they exhibit full expression of Ia specificities. Absorption-elution studies indicated that most of the Ia specificities detected on T and B cells may be identical. Ia antigens detected by homologous antisera gave much stronger reactions than those detected by cross-reacting antisera.
mesh_terms: D000818:Animals; D000941:Antigens; D001402:B-Lymphocytes / Q000276:immunology; D003429:Cross Reactions; D000939:Epitopes; D008070:Lipopolysaccharides; D008198:Lymph Nodes / Q000276:immunology; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D008815:Mice, Inbred Strains; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology; D013950:Thymus Gland / Q000276:immunology
chemical_list: D000941:Antigens; D000939:Epitopes; D008070:Lipopolysaccharides