10697
CBPTI - 3 showed chymotrypsin inhibition activity with a K ( i ) value of 2 . 55 x 10 ( - 9 ) M , but did not show trypsin inhibitor activity .
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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