13203
All of the compounds showed suppressive activity on the expression of HBV surface antigen ( HBsAg ) and HBV e antigen ( HBeAg ) in the HepG2 . 2 . 15 cell line with low cytotoxicity .
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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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