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The results indicate that PFOS can act as an estrogen receptor agonist and thyroid hormone receptor antagonist .
 Chemical: PFOS; Chemical: estrogen; Chemical: thyroid hormone
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: PFOS; Chemical: estrogen; Chemical: thyroid hormone