Evidence for neurosecretory substance in neurons in the small intestine of dogs

Abstract

Paraffin-embedded sections from the small intestine of the dog were stained for neurosecretory substance by various methods. Neurons in the submucous plexus show distinct violet granules, indicating the presence of neurosecretory substance. Nerve cells positive to Gomori’s stain were not seen in the myenteric plexus.