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Bobwhite were exposed to 4A - DNT at 0 , 8 , 15 , 30 , 60 , or 150 mg / kg body weight ( bw ) d by oral gavage for seven days ; because the high dose of 4A - DNT was lethal to bobwhite , the maximum dose was changed to 100 mg / kg bw d for Japanese quail and finches to ensure tissue could be used for future toxicogenomic work .
 Chemical: 4A - DNT; Chemical: 4A - DNT
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: 4A - DNT; Chemical: 4A - DNT