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As hypothesized , BMD and plasma estrogen levels were decreased more in DOVX rats than in rats following OVX ( NOVX ) or DMII ( DS ) alone .
 Chemical: estrogen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: estrogen