10
Whereas activation of the HIV-1 enhancer following T-cell stimulation is mediated largely through binding of the transcription factor NF-kappa B to two adjacent kappa B sites in the HIV-1 long terminal repeat , activation of the HIV-2 enhancer in monocytes and T cells is dependent on four cis-acting elements : a single kappa B site , two purine-rich binding sites , PuB1 and PuB2 , and a pets site .
 ( DNA: pets site, None) , ( cell type: monocytes, None) , ( DNA: PuB1, None) , ( DNA: HIV-1 enhancer, None) , ( DNA: kappa B sites, None) , ( cell type: T cells, None) , ( protein: transcription factor, None) , ( DNA: purine-rich binding sites, None) , ( protein: NF-kappa B, None) , ( DNA: cis-acting elements, None) , ( DNA: HIV-2 enhancer, None) , ( DNA: kappa B site, None) , ( DNA: HIV-1 long terminal repeat, None) , ( DNA: PuB2, 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:
 ( DNA: pets site, None) , ( cell type: monocytes, None) , ( DNA: PuB1, None) , ( DNA: HIV-1 enhancer, None) , ( DNA: kappa B sites, None) , ( cell type: T cells, None) , ( protein: transcription factor, None) , ( DNA: purine-rich binding sites, None) , ( protein: NF-kappa B, None) , ( DNA: cis-acting elements, None) , ( DNA: HIV-2 enhancer, None) , ( DNA: kappa B site, None) , ( DNA: HIV-1 long terminal repeat, None) , ( DNA: PuB2, None) 