11258
Thus, IL-2 may be another important cytokine modulated by RA in the immune response .
 protein: cytokine; protein: IL-2
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: cytokine, IL-2 
Answer:
 protein: cytokine; protein: IL-2