16866
Rats were treated with a single TCDD dose of 5 mu g / kg body weight ( b . w . ) and then for 3 weeks they were daily supplemented with tocopherol at a dose of 30 mg / kg b . w .
 Chemical: TCDD; Chemical: tocopherol
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: TCDD; Chemical: tocopherol