23795
A biological screening was performed to establish the total exposure to estrogenic compounds of red mullet ( Mullus barbatus ) collected at several sites along the Spanish Mediterranean coast by testing male fish bile extracts using the in vitro ER - LUC reporter gene assay .
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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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