2955
Compared with virgin controls , the mRNA expression of Ugt1a1 , 1a6 , 1a9 , 2a3 , 2b1 , 2b34 , and 2b35 decreased 40 to 80 % in pregnant dams .
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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