20357
At 50 . 0 and 100 . 0 mu M there was a 33 . 24 +/- 3 . 0 and 46 . 6 +/- 4 . 80 % irreversible decrease in force ( p < 0 . 05 , n = 4 ) , while a 18 . 02 +/- 4 . 07 % and 16 . 16 +/- 4 . 07 % reversible increase was observed in the frequency ( p = 0 . 02 , n = 4 ) .
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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