1351
Consistent with these effects , glucose tolerance improved , and glucose - stimulated serum insulin levels increased in biotin - supplemented mice , without changes in fasting glucose levels or insulin tolerance .
 glucose, glucose, biotin, 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, biotin, glucose