Islets of Langerhans

The pancreatic islets or islets of Langerhans are parts of the pancreas. They have cells that make hormones. Some of these cells are beta cells that produce the hormone insulin.

Islets Of Langerhans Media

Mouse islet immunostained for pancreatic polypeptide
Mouse islet immunostained for insulin
Mouse islet immunostained for glucagon
Illustration of dog pancreas. 250x.
Structural differences between rat islets (top) and humans islets (bottom) as well as the ventral part (left) and the dorsal part (right) of the pancreas. Different cell types are colour-coded. Rodent islets, unlike the human ones, show the characteristic insulin core.