Case pg352. Soma notes 36 female Sprague-Dawley rats weighing 200-350g. 10 microliters of CT-HRP(.20%-.40%) were injected into one eye ?behind the lens into the vitreous chamber of the eye. pressure injection over 1 min. Terminal notes Med. component of the RHT?in addition, labeled fibres and terms were found lateral to the lateral boundary of the SCN, in the lateroanterior hypothalamic nucleus. Lat component diffuse labeling in the lateroanterior hypothalamic nucleus was evident.

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...at the anterior hypothalamic level, the rostral pole of the anterior hypothalamic nucleus presented a dense cluster of retrogradely labeled cells distributed in a region that seems to overlap with a territory known to contain large numbers of neurons expressing enkephalin (Harlan et al., 1987), whereas the caudal two-thirds of the nucleus contained relatively sparse numbers of marked cells (Fig. 3D–I).

...at the anterior hypothalamic level, the rostral pole of the anterior hypothalamic nucleus presented a dense cluster of retrogradely labeled cells distributed in a region that seems to overlap with a territory known to contain large numbers of neurons expressing enkephalin (Harlan et al., 1987), whereas the caudal two-thirds of the nucleus contained relatively sparse numbers of marked cells (Fig. 3D–I).

At the anterior hypothalamic level, ascending fibers coursing through the hypothalamus supply dense inputs to the anterior hypothalamic nucleus, subparaventricular zone, rostral retrochiasmatic area, and perifornical region of the lateral hypothalamic area in addition to a relatively sparse input to the other regions of the lateral hypothalamic area (Figs. 5D–G, 6B).

Collator note: Conrad & Pfaff JCN 169:221-262, 1976; their injection sites were much larger, and spread more into adjacent cell groups. Thus, subdivision analysis was not possible, and some false positive results were possible. Projections not reported in

rostromedial terminal field, dorsomedial terminal field between AHN and RE, ventral to fx at tuberal levels, perifornical lateral to DMH