5013
To develop a transformation system with a conditional Epstein-Barr virus nuclear antigen 2 ( EBNA2 ) gene , we fused the hormone binding domain of the oestrogen receptor to the N or C terminus of EBNA2 .
 EBNA2, EBNA2, Epstein-Barr virus nuclear antigen 2 ( EBNA2 ) gene, hormone binding domain
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, EBNA2, Epstein-Barr virus nuclear antigen 2 ( EBNA2 ) gene, hormone binding domain