False-colour transmission electron micrograph (TEM) of various cell types comprising an islet of Langerhans,the endocrine component of the human pancreas. Beta cells secreting insulin appear green & orange; alpha cells secreting glucagon are coloured dark brown at right. The hormones insulin & glucagon are involved in carbohydrate metabolism. Insulin promotes the uptake of glucose by most cells,whilst (generally) glucagon counteracts the effects of insulin. Magnification: x17,500 at 6x7cm size,x7,800 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 3543 px × 2766 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |