14983
The detection of this protein selectively in extracts of lymphoid cells correlates with the presence of the E box -binding activity LEF1/BCF1 in these cells; this binding activity was previously shown to be efficiently recognized by antiserum directed against E2A gene products .
 ( DNA: E2A gene, None) , ( cell type: lymphoid cells, None) , ( protein: E2A gene products, None) , ( DNA: E box, None) , ( protein: LEF1/BCF1, 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: E2A gene, None) , ( cell type: lymphoid cells, None) , ( protein: E2A gene products, None) , ( DNA: E box, None) , ( protein: LEF1/BCF1, None) 