1082
In extracts of induced, Il-2 secreting El4 cells three individual protein factors bind to TCEd DNA .
 protein: Il-2; cell line: Il-2 secreting El4 cells; protein: protein factors; DNA: TCEd DNA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: Il-2; cell line: Il-2 secreting El4 cells; protein: protein factors; DNA: TCEd DNA