17165
They showed significant anti - influenza A H1N1 virus activities , with IC50 values of 32 . 3 , 56 . 9 , and 29 . 1 mu g / mL , respectively .
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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