Figure 19.

Photomicrographs of retrogradely labeled neurons in MLd and ICo following CTB injection into the Ov complex (case 478). Sections were counterstained with Giemsa so that CTB positive and negative neurons are in black and blue, respectively. A–B, Labeled neurons in the contralateral (A) and ipsilateral (B) MLd at the caudal level. C–D, Labeled neurons in the contralateral (C) and ipsilateral (D) MLd at the intermediate level. E–F, Labeled neurons in the contralateral (E) and ipsilateral (F) MLd at the rostral level. The dorsal is up. The medial is right in A, C and E and the left in B, D, F. G–H, Closer views of the boxes in A and B showing labeled neurons in the external nucleus of ICo with a notably higher density ipsilaterally (H) than contralaterally (G). I–J, Closer views of the boxes in C and D showing high densities of labeled neurons in the Hilar nucleus of ICo on both sides. K–L, Closer views of the boxes in D and F showing labeled neurons in the ipsilateral MLd. Scale bars = 2 mm in F (applies to A–F), 500 μm in H (applies to G–H), 25 μm in L (applies to I–L).