23647
As iodide intake was lowered to 75 micro g / day , the model simulated daily perchlorate dose required to cause hypothyroxinemia was reduced by eightfold .
 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