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. Author manuscript; available in PMC: 2009 Oct 6.
Published in final edited form as: Acta Neuropathol. 2009 May 16;118(3):415–428. doi: 10.1007/s00401-009-0546-8

Figure 5.

Figure 5

Lateral geniculate nucleus. a A low-magnification view of the hippocampus and lateral geniculate nucleus (LGN). For orientation, the inset shows a normal LGN. Notice that the LGN lies medial to the attachment point (ap) of the choroid plexus (cp), while the tail of the caudate nucleus (CN) is lateral to this point. In the control, the LGN is completely surrounded by myelinated axons; a myelin boundary (mb) separates the LGN from the surface of the brain. b A higher magnification view of the LGN, from the box in (a). This image is a composite of multiple smaller images taken at higher magnification and then combined to give higher resolution. The LGN lacks any discernable six-layer structure (see the control LGN). The optic radiation (or) is completely devoid of myelinated axons. A small amount of myelin is present in the myelin boundary (mb). c A higher magnification view from the box in (b). A few remaining magnocellular neurons (MCN, arrows) lie immediately superior to the myelinated axons; however, most neurons in the LGN are absent