908
The previously characterized factors J kappa , PU.1 , and AML1 bind to the LMP-1 E2RE , along with six other unidentified factors ( LBF2 to LBF7 ).
 LMP-1 E2RE, LBF7, AML1, LBF2, PU.1, J kappa
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:
 LMP-1 E2RE, LBF7, AML1, LBF2, PU.1, J kappa