Table 1.
Animals
| Animals | ||||
|---|---|---|---|---|
| BrdU | Sex | Comparison | [3H]dT | Sex |
| E55–P75 | F |  | E40–P62 | U |
| E55–P75 | F | E50–P61 | U | |
| E56–P66 | U | |||
| E70–P70 | F |  | ||
| E70–P75 | M | E62–P50 | U | |
| E70–P75 | M | E70–P98 | U | |
| E70–P75 | F | E80–P48 | U | |
| E70–P91 | F | E85–P94 | U | |
Qualitative assessment (n = 14) of the position of labeled cells was performed in all cases. Quantitative comparisons (n = 9) were made only for cases in which the injection time closely matched for both markers. F, Female; M, male; U, unknown; E, embryonic age at time of injection (days); P, postnatal day at time of killing (days).