Labels:text | screenshot | font | black | black and white OCR: Thich In contrast to most endocrine tissues in ether into hormone-producing cells are grouped to he cells of anatomically distinct glands, the endocri oughout itsthe gastrointestinal tract are scattered thr in any length, and hence peptide concentration . The one area are very low - around 10pmol/ are found majority of the peptides that are isolated in one region of the gut (Fig. 19.1). See later: · Gut Neuropeptides Gastrin-Cholecystokinin Family Secretin Family · GHRH in Gastrointestinal Endocrinol