6487
Furthermore, IL-2 and IL-12 synergistically induced IRF-1 , whereas IFN-alpha and IL-12 did not.
 protein: IL-2; protein: IL-12; protein: IL-12; protein: IFN-alpha; protein: IRF-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: IL-2, IL-12, IL-12, IFN-alpha, IRF-1 
Answer:
 protein: IL-2; protein: IL-12; protein: IL-12; protein: IFN-alpha; protein: IRF-1