title: [Detection of an early activation-dependent cell surface antigen on human T-lymphocytes].
abstract: The binding properties of a monoclonal antibody to an early activation marker of human lymphocytes are described. The monoclonal antibody BL-Ac/p26 binds to an antigen which is expressed on activated lymphocytes. This antigen is not detectable on resting lymphocytes or other blood cells. The surface radioiodinated antigen of activated T cells isolated by the monoclonal antibody BL-Ac/p26 is separated by SDS-PAGE in a major 26k Da component and a minor band (32 kDa) under reducing conditions. These polypeptide chains form disulphide linked dimers on the cell surface (Mr 55-77 kDa). This 26 kDa antigen is a very early activation marker of T lymphocytes. Human T lymphocytes stimulated by mitogens (PHA, ConA or PWM), anti-TCR/CD3 monoclonal antibodies or allogeneic leucocytes express this 26 kDa antigen after 2-4 hours.
authors.affiliation: Bereich Immunbiologie, Karl-Marx-Universität Leipzig.
authors.forename: H
authors.initials: H
authors.lastname: Fiebig
authors.forename: I
authors.initials: I
authors.lastname: Behn
authors.forename: U
authors.initials: U
authors.lastname: Hommel
mesh_terms: D000911:Antibodies, Monoclonal / Q000276:immunology; D000945:Antigens, Differentiation, T-Lymphocyte / Q000096:biosynthesis / Q000276:immunology*; D006801:Humans; D008213:Lymphocyte Activation / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte
vernacular_title: Nachweis eines frühen aktivierungsabhängigen Zelloberflächenantigens humaner T-Lymphozyten.