Failure to immortalize human "null" cells by Epstein Barr virus (EBV) "in vitro".
D002469:Cell Separation / Q000379:methods; D002471:Cell Transformation, Neoplastic; D002478:Cells, Cultured; D004854:Herpesvirus 4, Human; D006801:Humans; D008214:Lymphocytes / Q000276:immunology