17280
Archaeosomes were nontoxic to human Hep G2 , CACO - 2 and mildly toxic to rodent CHO and B16 - F1 cells but showed strong cytotoxic effect on EA . hy926 cells .
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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