14718
The binding activity of the X1 box DNA-binding protein RFX was examined and found to be present in wild-type B cells and the mutant RJ2.2.5 but was absent in SJO and Jurkat .
 ( cell line: wild-type B cells, None) , ( protein: X1 box DNA-binding protein, None) , ( cell line: RJ2.2.5, None) , ( cell line: Jurkat, None) , ( cell line: SJO, None) , ( protein: RFX, 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:
 ( cell line: wild-type B cells, None) , ( protein: X1 box DNA-binding protein, None) , ( cell line: RJ2.2.5, None) , ( cell line: Jurkat, None) , ( cell line: SJO, None) , ( protein: RFX, None) 