2276
Although it is well known that calcium channel blockers can influence contraction of vascular smooth muscle , there is less knowledge on its effect on excitation contraction coupling in the endocrine glands and more specifically on insulin and glucagon release .
 insulin, glucagon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 insulin, glucagon