5613
Yearling stream - type chinook salmon at the smolt stage were exposed to eight concentrations of each retardant in freshwater and a no - PHOS - CHEK control for 96 h to determine acute toxicity .
 None
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