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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: J Comp Neurol. 2014 Jul 10;522(16):3733–3753. doi: 10.1002/cne.23635

Figure 8.

Figure 8

Darkfield photomicrographs showing retinal projections to the accessory optic terminal nuclei and adjacent structures in the mouse. (A) Dorsal terminal nucleus (DT; contralateral; density = ++++); (B1,B2) Lateral terminal nucleus (LT; density = ++) at two contralateral levels (B1; rostral) and (B2; caudal); and (D) Medial terminal nuclei (MT; bilateral; density = +++++/+++ contra/ipsi). In (A), the DT is superficially present at the juncture of midbrain and thalamus. Ventral to it are projections (arrowheads) that lie in the caudal PLi or MG/SG (see Discussion). In (B1), the LT is evident immediately below the MGV and the most caudal IGL, at the dorsal boundary of the cerebral peduncle and the most caudal remnant of the optic tract (cf., Fig. 1M). Slightly more caudally (B2), neither the optic tract nor the IGL is present. In (B2), the Arrowhead points at retinal fibers crossing the caudal MGV. In (C), the MT is visible bilaterally. A small medial extension of the contralateral MT is indicated by the arrow, and arrowheads point at very sparse projections in the paranigral nucleus (PN; cf., Fig. 1M,mm; density = ±). Bars for A, C = 200 μm; bars for B1–2 = 100 μm.