23367
Metabolism of 2 , 2 ' , 3 , 3 ' , 6 , 6 ' - hexachlorobiphenyl ( PCB 136 ) atropisomers in tissue slices from phenobarbital or dexamethasone - induced rats is sex - dependent .
 Chemical: 2 , 2 ' , 3 , 3 ' , 6 , 6 ' - hexachlorobiphenyl; Chemical: PCB 136; Chemical: phenobarbital; Chemical: dexamethasone
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: 2 , 2 ' , 3 , 3 ' , 6 , 6 ' - hexachlorobiphenyl; Chemical: PCB 136; Chemical: phenobarbital; Chemical: dexamethasone