Van Aswegen, G.Kotze, Sanet H.Van der Merwe, N.J.Smith, G.A.Verwoerd, Daniel Wynand2013-11-192013-11-1920131992Van Aswegen, G, Kotze, SH, Van der Merwe, NJ & Smith, GA 1992, 'Bioactive peptides and serotonin, in the gut endocrine cells of the crocodile, Crocodylus niloticus (Laurenti 1768): an immunocytochemical study'. Onderstepoort Journal of Veterinary Research, vol. 59, no. 2, pp. 123-127.0330-2465http://hdl.handle.net/2263/32468The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Little is known about peptide-storing endocrine cells in the gut of the Nile crocodile. As in the case of other reptiles, particularly the alligator, a limited range of peptide-storing cells was found in the gut of the crocodile. They were somatostatin, glucagon, gastrin, neurotensin and pancreatic polypeptide. The topographical distribution of cells immunoreactive to somatostatin and gastrin in the gut of the crocodile is comparable to the situation in the alligator. Glucagon and neurotensin immunoreactive cells have a much wider distribution in the gastrointestinal tract of the crocodile compared to the alligator. Cholecystokinin and bombesin cells previously reported in the small intestine of the alligator were not detected in this study. This is the first report to demonstrate pancreatic polypeptide and serotonin immunoreactivity in the gut of a crocodilian specie.en©South Africa. Dept. of Agricultural Technical Services. ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineReptilesVeterinary medicine -- South AfricaCrocodylidae -- ResearchArticle