25590
However , a slow rebinding phase is observed at both 77K and 180K and is associated with a process of trapping in downward but " binding forbidden " substates with subsequent slow dynamical conversion to " binding competent " substates from which rebinding is relatively rapid .
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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