From: Life and death as a T lymphocyte: from immune protection to HIV pathogenesis
 |  | Numbers (%)* (YFP+ (%)†) | Turnover | Death‡ |
---|---|---|---|---|
CD4+ | Naïve | -12 (8) | CFSE ↑, Ki67 ≈, BrdU ≈ | ND§ |
 | Memory | 0 (55) | Ki67 ↑, BrdU ≈ | ↑ |
 | Treg | -40 (80) | Ki67 ↑, BrdU ↑ | ↑ |
CD8+ | Naïve | +4 (1) | CFSE ≈ | ND |
 | Memory | +133 (3) | BrdU ≈ | ND |
B cells | Â | +53 | Â | Â |