This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
Somatostatin is produced by 
Select and explain. 
A. Alpha cells, B. Beta cells, C. Delta cells, D. PP cells
C: Delta cells
Answer: C: Delta cells 
Explanation: Alpha cellsGlucagonBeta cellsInsulin, amylinDelta cellsSomatostatinPP cellsPancreatic polypeptideRef: Harrison 19e pg: 2403