The Human Brain During the Third Trimester

Germinal trigone

(at base of the Nodulus)

Remnant of the cerebellar

neuroepithelium

Germinal source of the

choroid plexus

Source of the

external germinal layer

earlier in development

1

2

3

Dense cell clusters

that may be premigratory

cohorts of glia and

Purkinje cells

Dense cell clusters

that may be premigratory

cohorts of glia and

Purkinje cells

GW26 Sagittal, CR 225 mm, Y147-63

Level 2: Section 481

CEREBELLUM

Germinal Trigone

See the entire section in Plate 191

and a medium magnification view

in Plates 201A and B.

PLATE 215