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.
 ( protein: (NF)-kB, None) , ( protein: DNA binding protein nuclear factor, None) , ( RNA: HIV mRNA, None) , ( protein: cytokines, None) , ( protein: LIF, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: (NF)-kB, None) , ( protein: DNA binding protein nuclear factor, None) , ( RNA: HIV mRNA, None) , ( protein: cytokines, None) , ( protein: LIF, None) 