Table 2.
Evolution of the laminar probabilities characterizing areas 6 and 3 neurogenesis
| Embryonic days of tritiated thymidine injection | Laminar probabilities (%) | |||||
|---|---|---|---|---|---|---|
| Infragranular | Layer IV | Supragranular | ||||
| Area 6 | Area 3 | Area 6 | Area 3 | Area 6 | Area 3 | |
| E12.5 | 100 | 100 | ||||
| E13.5 | 100 | 100 | ||||
| E14 | 100 | 100 | ||||
| E14.5 | 100 | 100 | ||||
| E15.5 | 100 | 95 | 5 | |||
| E16 | 88.9 | 22.6 | 11.1 | 73.6 | 3.8 | |
| E16.5 | 64.5 | 7.3 | 32.3 | 78.1 | 3.2 | 14.6 |
| E17.5 | 100 | 100 | ||||
| E18.5 | 100 | 100 | ||||
This parameter is defined as the probability for a neuron born on a given embryonic day in one of three radial compartments: (1) infragranular compartment (layers VIb + VIa + V), (2) layer IV, and (3) supragranular compartment (layers II and III). For experimental measures, see Polleux et al. (1997).