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In the present study , groups of male and female Crl : CD - 1 ( ICR ) mice were exposed to 0 ( control ) , 5000 , 10 , 000 , 20 , 000 , or 35 , 000ppm of arruva in the diet for 90days .
 Chemical: arruva
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: arruva