556
In seven EBV-B cell clones or lines differing in their capacity to secrete IL-2 , the activity of the IL-2 promoter correlated well with the status of IL-2 secretion .
 protein: IL-2; protein: IL-2; protein: IL-2; cell line: EBV-B cell clones; DNA: IL-2 promoter
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-2, IL-2, EBV-B cell clones, IL-2 promoter 
Answer:
 protein: IL-2; protein: IL-2; protein: IL-2; cell line: EBV-B cell clones; DNA: IL-2 promoter