10995
The EC20 values were greater than the dietary and hepatic concentrations predicted to result in a 20 % increase in kit mortality ( LC20 ) at six weeks of age ( 0 . 34 micro g Sigma PCBs / g feed or 2 . 6 pg TEQWHO 2005 / g feed and 0 . 80 micro g Sigma PCBs / g liver or 13 pg TEQWHO 2005 / g liver ) .
 Chemical: PCBs; 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; Chemical: PCBs