14878
The results demonstrate that different NDL - PCBs exhibit differential effects on sexually dimorphic behavior and that feminization occurs after removal of Ah receptor active contaminants .
 Chemical: PCBs
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: PCBs