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Q.
The hormone insulin is secreted by :
J & K CETJ & K CET 2006
Solution:
$ \beta $ cells of islets of Langerhans of pancreas secrete the hormone insulin. Pancreas is an endocrine as well as exocrine gland (i.e., a heterocrine gland). Insulin is also called as hypoglycaemic or anti diabetic factor, because it decreases the blood glucose level and prevents diabetes.