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Recently, the egr-1 promoter has been shown to be highly responsive to the diverse biochemical signals generated by antigen and cytokines in cells of the immune system .
 DNA: egr-1; DNA: egr-1 promoter; protein: cytokines
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: egr-1, egr-1 promoter, cytokines 
Answer:
 DNA: egr-1; DNA: egr-1 promoter; protein: cytokines