Meaning of ISLETS OF LANGERHANS

WordNet Dictionary
	Definition:		[n]  cell clusters in the pancreas that form the endocrine part of that organ; secrete insulin and other hormones
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	Synonyms:		islands of Langerhans, isles of Langerhans
	See Also:		ductless gland, endocrine gland, pancreas
Medical Dictionary
	Definition:		Cells in the pancreas that produce hormones (including insulin).
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Biology Dictionary
	Definition:		Special groups of cells in the pancreas. They make and secrete hormones that help the body break down and use food. Named after Paul Langerhans, the German scientist who discovered them in 1869, these cells sit in clusters in the pancreas. There are five types of cells in an islet: beta cells, which make insulin; alpha cells, which make glucagon; delta cells, which make somatostatin; and PP cells and D1 cells, about which little is known.
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