30549
There were no clinical signs of toxicity or mortality , but there was a slight decrease in the relative body weights in the Tween 80 - treated group ( p < 0 . 01 ) after repeated administration .
 Tween 80
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Tween 80