11449
The isolates were evaluated for their cytotoxicity against four human cancer cell lines ( A549 , HCT116 , HL - 60 , and ZR - 75 - 30 ) , but all were inactive ( IC ( 50 ) < 5 mu g / mL ) .
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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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