27535
Furthermore , cytochrome P450 2E1 ( CYP2E1 ) content was suppressed while proinflammatory cytokines tumour necrosis factor - alpha ( TNF - alpha ) and interleukin - 6 ( IL - 6 ) levels increased in liver tissue after CCl4 administration .
 Chemical: CCl4
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: CCl4 
Answer:
 Chemical: CCl4