3648
Because the -180 site is not required for trans-activation , it was possible to confirm by mutation in the normal mouse IL-2 enhancer that this site is absolutely essential for anergy induction .
 DNA: -180 site; DNA: IL-2 enhancer; DNA: mouse IL-2 enhancer; 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: -180 site, IL-2 enhancer, mouse IL-2 enhancer, IL-2 
Answer:
 DNA: -180 site; DNA: IL-2 enhancer; DNA: mouse IL-2 enhancer; protein: IL-2