14090
These findings suggest that LTR sequence changes can significantly affect basal LTR function and transcription factor recruitment , which may, in turn, alter the course of viral replication in cells of CNS and immune system origin .
 ( protein: transcription factor, None) , ( DNA: LTR sequence, None) , ( DNA: LTR, None) , ( DNA: LTR, 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: transcription factor, None) , ( DNA: LTR sequence, None) , ( DNA: LTR, None) , ( DNA: LTR, None) 