8743
NF-kappaB activity is tightly correlated with the transcriptional activity of a long terminal repeat ( LTR ) of HIV-1 transfected in thymocytes .
 ( DNA: long terminal repeat, None) , ( protein: NF-kappaB, None) , ( DNA: LTR, None) , ( cell type: thymocytes, 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: long terminal repeat, None) , ( protein: NF-kappaB, None) , ( DNA: LTR, None) , ( cell type: thymocytes, None) 