14711
Finally, by co-transfection experiments , we study the elements involved in the hGATA-1 transactivation of the R-PK promoter in HeLa cells .
 ( DNA: R-PK promoter, None) , ( cell line: HeLa cells, 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: R-PK promoter, None) , ( cell line: HeLa cells, None) 