front matter 1

GW6.8 CR 17.5 mm M2155 Cervical Cell body stain Spinal canal .0510 Neuroepithelium .2350 Roof plate .0140 Floor plate .0126 Gray ...

L a t e r a l f u n i c u l u s Cellular roof plate Fibrous roof plate Floor plateFloor plate Dorsal canal Dorsal canal Central ...

GW7.25 CR 22.5 mm C7254 Cervical Cell body stain Spinal canal .0887 Neuroepithelium .2207 Roof plate .0149 Floor plate .0153 Gra ...

Floor plateFloor plate Dorsal canal Dorsal canal Central canal Ventral canal Segregating ventral horn motoneuron columns Segrega ...

GW8.5 CR 32 mm C609 Cervical Cell body stain Central canal .0439 Neuroepithelium .0470 Roof plate .0092 Floor plate .0056 Gray m ...

Retreating roof plate Dorsal median septum Ventral median fissure Floor plateFloor plate Persisting central canal Ventral horn i ...

B. Spinal cord of a GW8.5 embryo The ventral part of the spinal canal is absent except at sacral/coccygeal levels, and the dorsa ...

GW8.5, CR 36 mm, M2050 Plates 14A, 14B Upper Cervical Section 730 Total area: 2.8238 mm^2 Plates 15A, 15B Cervical Enlargement S ...

GW8.5 CR 36 mm M2050 Upper Cervical Cell body stain Spinal canal .0622 Neuroepithelium .1072 Roof plate .0190 Floor plate .0209 ...

Retreating roof plate Postulated sojourn zone of premigratory neurons in the dorsal neuroepithelium Floor plateFloor plate Ventr ...

GW8.5 CR 36 mm M2050 Cervical Enlargement Cell body stain Spinal canal .0834 Neuroepithelium .0966 Roof plate .0221 Floor plate ...

Postulated sojourn zone of premigratory neurons in the dorsal neuroepithelium Postulated sojourn zone of premigratory neurons in ...

GW8.5 CR 36 mm M2050 Lower Cervical Cell body stain Spinal canal .0557 Neuroepithelium .0874 Roof plate .0124 Floor plate .0156 ...

Floor plateFloor plate Central canal Indistinct clusters of ventral horn motoneurons? Indistinct clusters of ventral horn motone ...

GW8.5 CR 36 mm M2050 Middle Thoracic Cell body stain Spinal canal .0238 Neuroepithelium .0625 Roof plate .0094 Floor plate .0110 ...

Floor plateFloor plate Central canal Central canal Ventral horn interneurons Ventral horn interneurons Intermediate interneurons ...

GW8.5 CR 36 mm M2050 Lower Thoracic Cell body stain Spinal canal .0317 Neuroepithelium .0857 Roof plate .0097 Floor plate .0132 ...

Floor plateFloor plate Central canal Ventral horn interneurons Ventral horn interneurons Intermediate interneurons Intermediate ...

GW8.5 CR 36 mm M2050 Lumbar Enlargement Cell body stain Spinal canal .0353 Neuroepithelium .0957 Roof plate .0238 Floor plate .0 ...

Floor plateFloor plate Central canal Ventral horn interneurons Ventral horn interneurons Intermediate interneurons Intermediate ...