DEMONSTRATION OF NEUROSECRETORY HYPOTHALAMO-RHOMBENCEPHALIC JUNCTION IN RATS BY RETROGRADE AXONAL-TRANSPORT OF HORSERADISH-PEROXIDASE

Abstract

The retrograde transport of horseradish peroxidase (HRP) was used to demonstrate the neurosecretory hypothalamo-hindbrain connection of the rat. Following HRP injections into the region of the dorsal columns nuclei labeled cells were observed in the caudal part of the paraventricular nucleus and in the lateral hypothalamic area. Hypothalamo-hindbrain projections were predominantly uncrossed.