5859
Compounds 1 , 2 , and 13 exhibited strong cytotoxicity against human tumor cell lines KB and NCI - H187 , with IC50 values in the range of 0 . 66 - 7 . 16 micro 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:
 None