Relative susceptibility and resistance of BL cell lines and LCLs to killing by H₂O₂ . Cells were seeded at a density of 5 × 10⁵/mL in growth medium. H₂O₂ was added as a bolus at the indicated concentrations. After 24 hours of incubation at 37°C, the number of live and dead cells was determined using trypan blue. The percentage of viability is defined as the number of live cells divided by the number of live plus dead cells. Also indicated are the p53 mutation (m indicates a mutated allele) and EBV infection status (+ indicates infected) for each cell line. Cell line (EBV, p53): (⊡) SHO (+, w/w); (▴) BJAB (−, w/m); (×) Tory (+, w/w); (▪) VDSO (+, w/w); (▵) CA-46 (−, m/m); (○) EW-36 (−, w/w); (⊞) JD-38 (−, m/m); (•) JLP 119 (−, w/w); (□) ST-486 (−, w/m).