10744
After 3weeks , the animals were euthanized and MDR1 , MRP2 , CYP1A4 , CYP1A5 and CYP3A37 mRNA expression were analyzed using qRT - PCR .
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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