8910
The problem of the neuro-immuno interactions on the level of the protein trans-factors , stimulating interleukin-2 ( IL-2 ) gene expression was discussed.
 protein: protein trans-factors; protein: interleukin-2; protein: IL-2; DNA: interleukin-2 ( IL-2 ) gene
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: protein trans-factors, interleukin-2, IL-2, interleukin-2 ( IL-2 ) gene 
Answer:
 protein: protein trans-factors; protein: interleukin-2; protein: IL-2; DNA: interleukin-2 ( IL-2 ) gene