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Fasting and mean post - MTT plasma bioactive GLP - 1 were higher ( P < 0 . 01 ) after S and M + S vs . M and P .
 Chemical: MTT
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: MTT