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To identify an EBNA2 dependent cis-acting element , various TP1 promoter-reporter gene constructs were transfected in the absence and presence of an EBNA2 expression vector into the established B-cell line BL41-P3HR1 .
 EBNA2, B-cell line BL41-P3HR1, EBNA2 dependent cis-acting element, TP1 promoter-reporter gene constructs, EBNA2, EBNA2 expression vector
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 EBNA2, B-cell line BL41-P3HR1, EBNA2 dependent cis-acting element, TP1 promoter-reporter gene constructs, EBNA2, EBNA2 expression vector