Neurophysin and the neurosecretory fibres of the sheep infundibulum

Summary A cross-species reactive antiserum was used to study the cellular localization of neurophysin in the sheep hypothalamus and neurohypophysis. The immunofluorescent technique was used to follow the neurosecretory fibres emanating from the magnocellular nuclei to the lower infundibular stem. It was confirmed that neurophysin was present in both the internal and external zone of the infundibulum.This work was supported by a research grant from the New Zealand Medical Research Council.