20161
This aggravation was associated with significantly enhanced hepatic level of interleukin - 6 ( IL - 6 ) , but unaltered hepatic levels of tumor necrosis factor - alpha ( TNF - alpha ) , interferon - gamma ( IFN - gamma ) and interleukin - 4 ( IL - 4 ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None