Enterochromaffin cells (EC) of the antropyloric mucosa in gastric and duodenal ulcers.

Enterochromaffin cells (EC) within the antropyloric mucosa in resected stomach from patients with gastric and duodenal ulcers were investigated by means of cytochemical and electron microscopy. The proliferation of antral EC cells was pointed out; among them EC cells of gastric and intestinal type were identified. The proliferation of antral EC cells seems to be related to the intensity of chronic gastritis.