title: Expression on human thymocytes of the idiotypic structures (Ti) from two leukemia T cell lines Jurkat and HPB-ALL.
abstract: The expression on a significant number of thymocytes of idiotypic structures (Ti) restricted to HPB-ALL or Jurkat cells is demonstrated. As many as 2-4% of thymocytes were stained with anti-Ti HPB-ALL or anti-Ti Jurkat monoclonal antibodies, when analyzed by flow microfluorometry. Immunohistochemical localization studies performed on frozen thymus specimens of either fetal or pediatric origin indicated a scattered distribution of Ti-positive cells in both the cortex and the medulla. From lysates of 125I-labeled pediatric thymocytes, anti-Ti HPB-ALL and anti-Ti Jurkat monoclonal antibodies precipitated disulfide-linked heterodimers comparable to those precipitated from 125I-labeled HPB-ALL or Jurkat cells as shown by sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis.
mesh_terms: D000911:Antibodies, Monoclonal / Q000276:immunology; D000912:Antibodies, Neoplasm / Q000276:immunology; D000937:Antigen-Antibody Reactions; D000951:Antigens, Neoplasm / Q000032:analysis; D002460:Cell Line; D006801:Humans; D007130:Immunoglobulin Idiotypes / Q000032:analysis* / Q000276:immunology; D007945:Leukemia, Lymphoid / Q000032:analysis / Q000276:immunology*; D011233:Precipitin Tests; D013194:Staining and Labeling; D013601:T-Lymphocytes / Q000032:analysis / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000912:Antibodies, Neoplasm; D000951:Antigens, Neoplasm; D007130:Immunoglobulin Idiotypes