10948
Clonal analysis revealed individual responses to the two immediate early proteins BZLF1 and BRLF1 , and to three ( BMLF1 , BMRF1 , and BALF2 ) of the six early proteins tested.
 BMRF1, BMLF1, BRLF1, immediate early proteins, early proteins, BALF2, BZLF1
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:
 BMRF1, BMLF1, BRLF1, immediate early proteins, early proteins, BALF2, BZLF1