2310
To characterize mechanisms responsible for these LIF effects , levels of HIV mRNA , activation of the DNA binding protein nuclear factor (NF)-kB , signal transduction pathways , and potential interactions with other cytokines were analyzed.
 (NF)-kB, DNA binding protein nuclear factor, HIV mRNA, cytokines, LIF
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:
 (NF)-kB, DNA binding protein nuclear factor, HIV mRNA, cytokines, LIF