3765
In lymphoid cell lines only, the E(gre) -binding protein complexes included ALF1 or HEB and E2A basic helix-loop-helix proteins .
 ( protein: ALF1, None) , ( cell line: lymphoid cell lines, None) , ( protein: basic helix-loop-helix proteins, None) , ( protein: E2A basic helix-loop-helix proteins, None) , ( DNA: E(gre), None) , ( protein: E(gre) -binding protein complexes, None) , ( protein: HEB, 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: ALF1, None) , ( cell line: lymphoid cell lines, None) , ( protein: basic helix-loop-helix proteins, None) , ( protein: E2A basic helix-loop-helix proteins, None) , ( DNA: E(gre), None) , ( protein: E(gre) -binding protein complexes, None) , ( protein: HEB, None) 