22191
Hydrogels of various compositions , with a range of elastic moduli ( 1kPa to 25kPa ) can be produced from these polypeptides , and the activity of the cell - binding and matrix metalloproteinase ( MMP ) sensitive domains was confirmed .
 None
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