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Aryl hydrocarbon receptor ( AHR ) antagonists blocked the response of many transcripts to TCDD , and the endpoints of decreased ATP production and differentiation , suggesting regulation by the AHR .
 Chemical: Aryl hydrocarbon; Chemical: TCDD; Chemical: ATP
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: Aryl hydrocarbon; Chemical: TCDD; Chemical: ATP