13387
This allows direct comparison with similar effects found for other environmental contaminants like polychlorinated biphenyls and brominated flame - retardants .
 Chemical: polychlorinated biphenyls
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: polychlorinated biphenyls