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To determine whether different cellular factors were involved in E3 regulation in lymphocytes as compared with HeLa cells , both DNA binding and transfection analysis with the E3 promoter in both cell types were performed.
 cell type: lymphocytes; DNA: E3 promoter; cell line: HeLa cells; protein: cellular factors
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:
 cell type: lymphocytes; DNA: E3 promoter; cell line: HeLa cells; protein: cellular factors