18847
The effects are highest for the longer grafts , and molecular weight thresholds were found to lie between 21 and 34 kDa at 25 degrees C and between 9 and 21 kDa at 40 degrees C .
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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