title: Generation of long-term human cytolytic cell lines with persistent natural killer activity.
abstract: Human cell lines maintained by in vitro stimulation with the HLA-A, B-negative, DR-positive, Epstein Barr virus-transformed, lymphoblastoid cell line Daudi in the presence of conditioned medium demonstrated significant NK activity for over 6 wk in continuous culture. These cells lyse K562 and a broad panel of lymphoblastoid cell lines but do not lyse normal peripheral blood lymphocytes or pokeweed mitogen blasts. They possess the sheep red blood cell receptor but lack other T cell markers (Lyt-3+, OKT3-). Natural killer activity correlated with the presence of a Mac 1-positive subpopulation of cells present in these long-term lines.
mesh_terms: D000911:Antibodies, Monoclonal; D000954:Antigens, Surface / Q000032:analysis; D002460:Cell Line; D002472:Cell Transformation, Viral; D003470:Culture Media; D003602:Cytotoxicity, Immunologic; D004854:Herpesvirus 4, Human; D006801:Humans; D007113:Immunity, Innate; D007156:Immunologic Memory; D007694:Killer Cells, Natural / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D000954:Antigens, Surface; D003470:Culture Media