front matter 1

4 and (3) a cell-sparse marginal layer. His further subdivided the inner layer into four plates: a roof plate, a fl oor plate, a ...

5 F. References Altman, J., and S. A. Bayer (1981) Development of the Cranial Nerve Ganglia and Related Nuclei in the Rat. (Adva ...

Plate 1 is a survey of sections from the cervical levels of the spinal cord in the youngest 11 specimens. All sections are shown ...

Plates 2A, 2B GW4.0 CR 4.0 mm Plates 9A, 9B GW6.7 CR 17.1 mm Plates 10A, 10B GW6.8 CR 17.5 mm Plates 11A, 11B GW7.25 CR 22.5 mm ...

GW4.0 CR 4.0 mm M714 Cervical Cell body stain Areas (mm^2 ) Spinal canal .0046 Neuroepithelium .0459 Roof plate .0021 Floor plat ...

Roof plateRoof plate Floor plateFloor plate Dorsal neuroepithelium (alar plate) Intermediate neuroepithelium Ventral neuroepithe ...

GW4.5 CR 6.3 mm M2300 Cervical Cell body stain Spinal canal .0130 Neuroepithelium .1163 Roof plate .0036 Floor plate .0043 Gray ...

Roof plateRoof plate Floor plateFloor plate Dorsal neuroepithelium (alar plate) Intermediate neuroepithelium Ventral neuroepithe ...

GW4.75 CR 6.7 mm M2285 Cervical Cell body stain Spinal canal .0400 Neuroepithelium .1080 Roof plate .0037 Floor plate .0048 Gray ...

Roof plateRoof plate Floor plateFloor plate Dorsal neuroepithelium Edge of gray matter Intermediate neuroepithelium Ventral neur ...

GW5.25 CR 8.0 mm M2065 Cervical Cell body stain Spinal canal .0255 Neuroepithelium .1103 Roof plate .0012 Floor plate .0067 Gray ...

Roof plate Floor plateFloor plate Dorsal neuroepithelium Intermediate neuroepithelium Ventral neuroepithelium Ventral funiculus ...

GW5.5 CR 11 mm C8998 Cervical Cell body stain Spinal canal .0523 Neuroepithelium .2376 Roof plate .0029 Floor plate .0079 Gray m ...

Expanding tip Roof plate Floor plateFloor plate Dorsal neuroepithelium Intermediate neuroepithelium Ventral neuroepithelium comp ...

GW5.5 CR 11.1 mm M2161 Cervical Cell body stain Spinal canal .0974 Neuroepithelium .2160 Roof plate .0066 Floor plate .0070 Gray ...

Roof plateRoof plate Floor plateFloor plate VVentral white commissureentral white commissure Expanding dorsal canal Central cana ...

GW6.5 CR 14.5 mm C7707 Cervical Cell body stain Spinal canal .0559 Neuroepithelium .1810 Roof plate .0136 Floor plate .0057 Gray ...

Cellular roof plate Fibrous roof plate Floor plateFloor plate Expanding dorsal canal Expanding dorsal canal Central canal Recedi ...

GW6.7 CR 17.1 mm C8965 Cervical Cell body stain Spinal canal .0166 Neuroepithelium .1549 Roof plate .0069 Floor plate .0051 Gray ...

Segregating ventral horn motoneurons Segregating ventral horn motoneurons Settling ventral horn interneurons Cellular roof plate ...