False-colour scanning electron micrograph of the surface of a single islet of Langerhans from a mammalian pancreas. About one million islets are scattered throughout the pancreas. Some 3,000 cells in each islet secrete a variety of hormones. The most numerous are the insulin-producing (beta) cells which secrete insulin directly into the bloodstream. Insulin's main role is in controlling the transport of glucose; insulin deficiency results in diabetes. Other hormones secreted by different cells in the islet include glucagon,pancreatic polypeptide,and somatostatin. Magnification: x233 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / DR L. ORCI, UNIVERSITY OF GENEVA |
Taille de l’image : | 3543 px × 2575 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |