4520
C/EBP activators are required for HIV-1 replication and proviral induction in monocytic cell lines .
 C/EBP activators, monocytic cell lines
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:
 C/EBP activators, monocytic cell lines