Inferred network

R(Retina) → PVH(Paraventricular nucleus of the hypothalamus)
PVH(Paraventricular nucleus of the hypothalamus) → PAG(Periaqueductal gray)
PAG(Periaqueductal gray) → MPN(Medial preoptic nucleus)
MPN(Medial preoptic nucleus) → LHA(Lateral hypothalamic area)

Support information about direct projections from Retina to Paraventricular nucleus of the hypothalamus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
RetinaParaventricular nucleus of the hypothalamus moderatenot knownCholera toxin conjugated to HRP
Case pg348, fig2. 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: a few fibres were seen in the PVN in some rats but this label was not consistently evident.
Levine JD, Weiss ML, Rosenwasser AM, Miselis RR., 1991

Support information about direct projections from Paraventricular nucleus of the hypothalamus to Periaqueductal gray:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Paraventricular nucleus of the hypothalamusPeriaqueductal gray lightnot knownHRP
Case table2. Soma notes not specified.. Terminal notes HRP inj.
Beitz AJ., 1982

Support information about direct projections from Periaqueductal gray to Medial preoptic nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Periaqueductal grayMedial preoptic nucleus existsnot knowntrue blue/immunohistochemistry
none provided
Simerly R.B., Swanson L.W., Gorski R.A., 1984

Support information about direct projections from Medial preoptic nucleus to Lateral hypothalamic area:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Medial preoptic nucleusLateral hypothalamic area moderatenot knownHRP/WGA
Case table1. Soma notes WGA-HRP inj. Terminal notes lateral hypothalamic nucleus.
Chiba T, Murata Y., 1985
Medial preoptic nucleusLateral hypothalamic area existsnot knownautoradiography
none provided
Swanson L.W., 1976
Medial preoptic nucleusLateral hypothalamic area existsnot knownPHAL
earlier: Swanson JCN 167:227, 1976. Collator note: repeats not included from Swanson, Mogenson, Gerfen, & Robinson Brain Res. 295:161-178, 1984
Swanson L.W., Mogenson G.J., Simerly R.B., Wu M., 1987