10614
We show here that c-Raf , which is at the helm of the classic MAP- Erk cascade , contributes to IL-2 induction through a distal enhancer element spanning the nucleotides from positions -502 to -413 in front of the transcriptional start site of the IL-2 gene .
 protein: IL-2; DNA: distal enhancer element; protein: Erk; protein: IL-2; DNA: IL-2 gene; protein: c-Raf
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, distal enhancer element, Erk, IL-2, IL-2 gene, c-Raf 
Answer:
 protein: IL-2; DNA: distal enhancer element; protein: Erk; protein: IL-2; DNA: IL-2 gene; protein: c-Raf