30079
I3S increased expression of ROR gamma t , the master transcription factor for Th17 differentiation , and stimulated Th17 differentiation , in a comparative manner as 2 , 3 , 7 , 8 - tetrachlorodibenzo - p - dioxin ( TCDD ) , a prototypical AhR ligand .
 Chemical: I3S; Chemical: 2 , 3 , 7 , 8 - tetrachlorodibenzo - p - dioxin; 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: 2 , 3 , 7 , 8 - tetrachlorodibenzo - p - dioxin; Chemical: TCDD