The <u>beta</u> cells of pancreatic islets produce insulin.
A beta cell's primary job is to create and secrete insulin, the hormone in charge of controlling blood glucose levels. Beta cells swiftly react by secreting part of their stored insulin and increasing the secretion of the hormone when blood glucose levels start to rise (for instance, after digestion).
Normally, it takes around 10 minutes for this fast reaction to a blood glucose surge. However, in persons with diabetes, these cells are either unable to produce enough insulin for blood sugar regulation or are targeted and destroyed by the immune system (type 1 diabetes) ( type 2 diabetes ).
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