5807
Gcgr ( Hep ) ( - / - ) mice exhibited reductions in fasting blood glucose and improvements in insulin sensitivity and glucose tolerance compared with wild - type controls , similar in magnitude to changes observed in Gcgr ( - / - ) mice .
 glucose, glucose
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 glucose, glucose