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Significant increases in mean intensity of Dio1 and Dio3 expression in the periventricular zone of brain and pronephric duct , respectively ( quantified by measuring intensity of coloration using ImageJ analysis software ) were observed , suggesting localized response at the HPT axis with the possibility of impacting neurodevelopment .
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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:
 None