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The most remarkable result of these experiments is our finding that the corona - forming chain plays an important role in affecting how the PFS chains crystallize in the core of the micelles and , subsequently , the range of temperatures over which the micelle fragments dissolve .
 PFS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 PFS