19371
Our results show that the mechanical stiffness of protein and membrane increases with the loading rate up to a factor of 10 ( from ~ 0 . 3 to 3 . 2 N / m ) .
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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:
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