29984
AIMS / HYPOTHESIS : Studies have shown that dipeptidyl peptidase - 4 ( DPP4 ) inhibitors stimulate insulin secretion and increase beta cell mass in rodents .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None