23493
This initial action was accompanied by up - regulation of cyclooxygenase - 2 ( COX - 2 ) , an important inflammation marker within 1h after TCDD treatment .
 Chemical: TCDD
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