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Since HACs are known as possible colon and liver cancer inducers , C . lechleri essential oil was tested for its cytotoxicity and anti - proliferative capacity against LoVo and HepG2 cancer cell lines showing IC50 of 74 . 95 +/- 0 . 05 mu g / ml ( LoVo ) and 82 . 28 +/- 0 . 03 mu g / ml ( HepG2 ) , displaying a promising role of this essential oil as a functional food ingredient with interesting mutagen preventing properties .
 Chemical: HACs
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: HACs