17392
Fish heads were stored at - 40 degrees C ( T1 ) , - 40 degrees C for 12h and then - 18 degrees C ( T2 ) , - 18 degrees C ( T3 ) for 3months prior to ice storage .
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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:
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