25900
The observations suggest that in 5L cells the Igfbp - 4 gene may have got under the control of a promoter containing dioxin responsive element ( s ) leading to the induction of IGFBP - 4 by TCDD .
 Chemical: 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: dioxin; Chemical: TCDD