30080
Activation of STAT3 , which is phosphorylated by the IL - 6 signaling pathways and thus is necessary for Th17 differentiation , was strongly stimulated by I3S and TCDD .
 Chemical: I3S; 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: I3S; Chemical: TCDD