9920
Electrophoretic mobility shift assay analysis showed that Tax increased the DNA binding activity of both Sp1 and NGFI-A/Egr-1 using a TRE1 probe .
 ( protein: Sp1, None) , ( protein: NGFI-A/Egr-1, None) , ( DNA: TRE1 probe, None) , ( protein: Tax, None) , ( DNA: TRE1, 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: Sp1, None) , ( protein: NGFI-A/Egr-1, None) , ( DNA: TRE1 probe, None) , ( protein: Tax, None) , ( DNA: TRE1, None) 