14920
It was found that MMP - 2 and MMP - 9 caused 63 % and 44 % increased protein loss and 65 % and 95 % increased release from MMP - sensitive hydrogels , while the compressive modulus decreased by 41 % and 29 % .
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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