23646
For a daily iodide - sufficient intake of 200 micro g / day , the dose of perchlorate required to reduce maternal fT4 levels to a hypothyroxinemic state was estimated at 32 . 2 micro g / kg / day .
 Chemical: iodide; Chemical: perchlorate
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: iodide; Chemical: perchlorate