10721
Environmental chemicals that perturb the thyroid axis result in modest reductions in TH , yet there is a paucity of data on the extent of neurological impairments associated with low - level TH disruption .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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