Figure 2.

Apoptosis resistance is independent of the magnitude of viral replication. A) Jurkat and J1.1 cells were incubated in the presence or absence of 1000 U/ml TNF-α for 48 h, and then treated with 10 μM H₂O₂ or 0.1 μM STS. The percentages of annexin-V⁺, PI^- or PI⁺ cells are shown. B) U937 and U1 cells were incubated in the presence or absence of 100 ng/ml PMA for 24 h, and then exposed to 10 μM H₂O₂ or 0.1 μM STS. The percentages of annexin-V⁺, PI^- or PI⁺ cells are shown.