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At a protein concentration of 44 micro g / mL , the 50 kDa fraction induced a mortality of 90 % for PC3 , 89 % for A549 , 85 % for HCT15 and of 81 % for BT549 cell lines .
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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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