Neuropeptide Y-Like Immunoreactivity Is Present in Boutons Synapsing on Vasopressin-Containing Neurons in Rabbit Supraoptic Nucleus

Abstract
Ultrastructural immunocytochemical methods were used to examine the relationship between nerve terminals containing neuropeptide Y-like immunoreactivity and vasopressin-containing neurons in the rabbit supraoptic nucleus. Some boutons containing neuropeptide Y-like immunoreactivity formed synapses on the soma and proximal dendrites of vasopressin-containing neurons.