Pancreatic beta cell: A sort of cell in the pancreas that makes insulin. The pancreas is a fish-molded organ that extends over the rear of the midsection behind the stomach. Inside the pancreas there are regions that are known as the islets of Langerhans. The beta cells comprise the overwhelming kind of cell in the islets. The beta cells are especially significant in light of the fact that they make insulin. Degeneration of the beta cells is the primary driver of type I (insulin-subordinate) diabetes mellitus Beta cells are one of a kind cells in the pancreas that produce, store and discharge the hormone insulin. Situated in the region of the pancreas know as the islets of Langerhans (the organ's endocrine structures), they are one of in any event five distinct sorts of islet cells that create and emit hormones straightforwardly into the circulatory system. The primary capacity of a beta cell is to deliver and discharge insulin – the hormone liable for managing levels of glucose in the blood. At the point when blood glucose levels begin to rise (for example during absorption), beta cells rapidly react by emitting a portion of their put away insulin while simultaneously expanding creation of the hormone. This brisk reaction to a spike in blood glucose for the most part takes around ten minutes. In individuals with diabetes, be that as it may, these cells are either assaulted and pulverized by the invulnerable framework ( type 1 diabetes ), or can't create an adequate measure of insulin required for glucose control ( type 2 diabetes )