Development of the adult endocrine pancreas during metamorphosis in the sea lamprey,Petromyzon marinus L. I. Light microscopy and autoradiography
| Autor: | W. M. Elliott, J. H. Youson |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
medicine.medical_specialty
media_common.quotation_subject Connective tissue Biology Islets of Langerhans Internal medicine medicine Animals Metamorphosis media_common Common bile duct Histocytochemistry Bile duct Lamprey Metamorphosis Biological Lampreys biology.organism_classification Agricultural and Biological Sciences (miscellaneous) Epithelium medicine.anatomical_structure Petromyzon Endocrinology Larva Autoradiography Bile Ducts Anatomy Pancreas Thymidine |
| Zdroj: | The Anatomical Record. 237:259-270 |
| ISSN: | 1097-0185 0003-276X |
| DOI: | 10.1002/ar.1092370213 |
| Popis: | The results of this study were found to support the hypothesis put forth by Boenig (Z. Mikrosk-Anat. Forsch., 17:125–184, 1929) that the caudal pancreas of adult lamprey develops from the epithelium of the extrahepatic common bile duct in that the bile duct cells were found to undergo a great proliferation during the early stages of metamorphosis, with a large number of the cells incorporating 3H-thymidine. If the bile duct degenerated as suggested by Barrington (The Biology of Lampreys. Academic Press, London, pp. 135–169, 1972), this uptake would not be expected. The cranial pancreas was determined to develop in a similar manner to the larval islets, with formation of the islets taking place within the intestinal/diverticular epithelium. The newly formed islets would migrate into the surrounding connective tissue. During the later stages of metamorphosis a small number of cells was found to incorporate the tritiated thymidine within mature islets. © 1993 Wiley-Liss Inc. |
| Databáze: | OpenAIRE |
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