29987
METHODS : After 1 month of HFD alone , the mice were given the DPP4 inhibitor vildagliptin for a further 11 months .
 Chemical: vildagliptin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: vildagliptin