722
When the constructs were transfected into OCIM1 cells , which do not express zeta-globin , the zeta-globin promoters were at best 20% as active as the alpha-globin promoters .
 ( cell line: OCIM1 cells, None) , ( DNA: promoters, None) , ( DNA: zeta-globin promoters, None) , ( protein: zeta-globin, None) , ( DNA: alpha-globin promoters, None) , ( protein: zeta-globin, 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: OCIM1 cells, None) , ( DNA: promoters, None) , ( DNA: zeta-globin promoters, None) , ( protein: zeta-globin, None) , ( DNA: alpha-globin promoters, None) , ( protein: zeta-globin, None) 