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Which one of the following pairs is incorrectly matched?
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- Glucagon - Beta cells (source)
- Somatostatin - Delta cells (source)
- Corpus luteum - Relaxin (secretion)
- Insulin - Diabetes mellitus (disease)
Correct Option: A
Glucagon is secreted by a-cells of the islets of Langerhans in the pancreas. It increases the concentration of glucose in the blood by stimulating the breakdown of glycogen.