1535
The mechanism(s) responsible for the cell type-specific regulation of TNF alpha is not known.
 protein: TNF alpha
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: TNF alpha 
Answer:
 protein: TNF alpha