465
In this study , the physiological and gene expression effects of 20E were analyzed in C57BL / 6 mice given a continuous infusion of saline or 20E ( 5 mg / kg / day ) for 5 or 15 days using subcutaneously implanted Alzet (R) osmotic pumps .
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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