25724
In addition , NG108 - 15 monoculture at microscale decreased EC50 from 12 . 5 to 2 . 6ng / micro l ( p < 0 . 001 ) compared with macroscale .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None