Pancreatic cells, TEM

Numéro d’image : 12420805
Pancreatic cells, TEM
Pancreatic cells. Transmission electron micrograph (TEM) of an acinar (exocrine) pancreatic cell (left) adjacent to an hormone-secreting (endocrine) islet of Langerhans cell (right). Acinar cells secrete zymogens (inactive digestive enzymes) in vesicles called zymogen granules (large black circles, left), which then become activated when in the small intestine. Islet of Langerhans cells regulate blood sugar levels by secreting hormones such as insulin and glucagon, that are also transported out of the cell by granules (small black dots, right). The large bodies (centre right and top right) are nuclei and the small organelles seen throughout are mitochondria.
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4572 px × 4347 px
Model Release : Non requis
Property Release : Non requis
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