6921
The results indicated that serum TT4 and TSH levels were significantly increased at all concentrations , serum TT3 levels were significantly reduced only at 40 mg / kg thiazole - Zn , but had no difference from controls at the other doses .
 Chemical: thiazole; Chemical: Zn
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: thiazole; Chemical: Zn