10630
By making use of the Diels - Alder reaction , it was possible to control the release rate of reversibly bound moieties from the hydrogel by changing the temperature ; higher temperatures favor a faster retro - Diels - Alder reaction and , therefore , a faster release from the polymer network .
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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