20721
Using whole mount in situ hybridization to examine thyroid hormone deiodinase expression in embryonic and larval zebrafish : A tool for examining OH - BDE toxicity to early life stages .
 Chemical: thyroid hormone; Chemical: OH - BDE
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: thyroid hormone; Chemical: OH - BDE