the cells are EBNA positive(EBNA ) and surface immunoglobulin negative(slg-); the lines carries Epstein-Barr virus(EBV) and contains 60 copies of the EBV genome per cell Tumorigenecity:Isoenzyme:G6PD, BHistopathology:Subculture:Split ratio:Media change:Reverse transcritase:negativeProduction