4975
Furthermore, transient-cotransfection assay demonstrated that PU.1 (and not Elf-1 ) can transactivate the c-fes promoter in nonmyeloid cell lines .
 ( DNA: c-fes promoter, None) , ( protein: Elf-1, None) , ( cell line: nonmyeloid cell lines, None) , ( protein: PU.1, 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: c-fes promoter, None) , ( protein: Elf-1, None) , ( cell line: nonmyeloid cell lines, None) , ( protein: PU.1, None) 