FIGURE 4.

An injection of CAV-2-CMV-mCitrine into the left superior rectus (A) resulted in motoneuronal labeling along midline, in the region of the S-group, between the left and right oculomotor nucleus. Low magnification views from representative sections containing the rostral (B) and more caudal (E) oculomotor nucleus, box in (B) indicates location of drawing shown in (C), box in (E) indicates the location of the drawing shown in (F). (C,F) Medium magnification views of the oculomotor nucleus and the distribution of superior rectus motoneuronal labeling within. ^∗ in (F) indicates potential inferior rectus motoneurons labeled in the left oculomotor nucleus. (D,G) High magnification, camera lucida reconstructions of single neurons from this case, demonstrating the intracellular distribution of mCitrine expression within single cells. Labeled neuronal structures (i, ii, and iii) in (C) are presented as high magnification in (D). Magnifications are the same for (B,E), (C,F) and (D,G).