FIG. 2.
Apoptosis-related cell death of sham-exposed and virus-exposed CD3+ (solid bars), CD4+ (open bars), and CD8+ (hatched bars) lymphocytes. Results from five experiments are presented as mean percentage of apoptotic (TUNEL+) cells ± SD. Data from 10,000 CD3+, CD4+, or CD8+ cells were collected for each sample.