955
No significant differences between EBNA-2 -positive and EBNA-2 -negative nuclear extracts could be seen in the gel retardation assay under conditions that clearly showed binding of EBNA-2A to the TP1 promoter .
 EBNA-2, EBNA-2A, TP1 promoter, EBNA-2
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:
 EBNA-2, EBNA-2A, TP1 promoter, EBNA-2