Case pg348,349, fig5a-f. 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 Medial component of the RHT included labeled fibres and terminals found near the midline involved the medial half of the medial preoptic area terminals evident in the ventral part of the medial preoptic nucleus.

Case table1. Soma notes not specified.. Terminal notes WGA-HRP inj.

Case table1. Soma notes WGA-HRP inj. Terminal notes not specified..

moderate in slm, light in all other layers; ventral third/zones 3-5; earlier: Canteras et al. JCN 324:143,1992/reexamination of the same material in more detail here

ventral CA1

ventral CA1

Collator note: strong labeling of stratum lacunosum. The other layers of the CA1 are labeled moderate-to-weak. Se Fig 7A-C, Swanson Atlas Levels 34-38.

At caudal levels of the PA a small number of labeled fibers course medially toward the hippocampal formation where they innervate the ventral subiculum and adjacent, ventral parts of field CA1 (Fig. 6N-P). These labeled axons tend to remain in the stratum lacunosum- moleculare and the stratum radiatum, although (especially in field CA ) a few of them actually course through the pyramidal layer (Fig. 6P). Collator note: Swanson Atlas Levels 33-37.

The LHA receives the strongest field CA1 projection of any hypothalamic component. LHA medial regions receive a moderate projection of varicose fibers and terminal boutons from the rostral end of the LHA to about mid-rostrocaudal levels of the ventromedial nucleus, where the projection becomes considerably denser (Fig. 3D-G).

Rostroventrally, a tight group of PHAL-labeled fibers is observed in the ventromedial corner of the LHA anterior region’s ventral zone, and a few labeled fibers are also seen in the intermediate zone (Fig. 3D-F).

Rostrodorsally, a moderate plexus of varicose fibers with boutons occupies the LHA juxtaparaventricular region and an adjacent medial expanse of the anterior region’s dorsal zone, dorsal to the anterior hypothalamic nucleus (Fig. 3E,F).

At the level of the ventromedial nucleus, the terminal field becomes significantly denser (Fig. 3G). Here, the LHA’s juxtadorsomedial region, and dorsal and ventral zones of the juxtaventromedial region, all contain a moderately dense terminal field.