22
In agreement with the results of gel retardation assays , tandem copies of the E6 motif stimulated transcription in ARH77 and Raji cells but not in Jurkat or HeLa cells .
 cell line: Raji cells; cell line: ARH77; cell line: HeLa cells; cell line: Jurkat; DNA: E6 motif
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 line: Raji cells; cell line: ARH77; cell line: HeLa cells; cell line: Jurkat; DNA: E6 motif