Table I.
Percentage of Dying Premyelinating Oligodendrocytes in Developing Cerebral Cortex
| Postnatal age | Total cells counted | Dying cells (percentage of total) | ||
|---|---|---|---|---|
| 7 | 172 | 37 (22.0) | ||
| 11 | 453 | 96 (21.4) | ||
| 14 | 344 | 59 (17.9) | ||
| 21 | 150 | 29 (19.6) | ||
| 28 | 102 | 38 (37.8) |
DM-20/PLP–positive cells were identified and grouped into cells with continuous (healthy) or fragmented (dying) immunoreactivity. Sampling was restricted to the leading edge of myelin in cerebral cortex. Areas of diencephalon were not sampled. Statistical analysis showed no difference in percentage of dying cells at various time points.