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A modest decrease in global DNA methylation was observed in N2A cells exposed to 10 mu M DES , BPA , TCDD , BDE - 47 , PCB - 153 and 1 mu M HCB , but no changes were found in the human SK - N - AS cells .
 Chemical: DES; Chemical: BPA; Chemical: TCDD; Chemical: BDE - 47; Chemical: PCB - 153; Chemical: HCB
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: DES; Chemical: BPA; Chemical: TCDD; Chemical: BDE - 47; Chemical: PCB - 153; Chemical: HCB