3781
Evidence from several systems indicates that the immediate early gene , egr-1 may be of particular importance in the immune system .
 DNA: immediate early gene; DNA: egr-1
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: immediate early gene, egr-1 
Answer:
 DNA: immediate early gene; DNA: egr-1