6907
The in vivo molecular " dissection " of ER alpha represents both a molecular and integrated approach that already allowed to delineate in mouse the role of the main " subfunctions " of the receptor and that could pave the way to an optimization of the ER modulation .
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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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