3622
To examine the role of EKLF in the developmental regulation of the human gamma-globin gene we interbred EKLF heterozygotes (+/-) with mice harboring a human beta-globin yeast artificial chromosome transgene .
 ( protein: EKLF heterozygotes, None) , ( DNA: human beta-globin yeast artificial chromosome transgene, None) , ( protein: EKLF, None) , ( DNA: human gamma-globin gene, None) , ( protein: EKLF, 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: EKLF heterozygotes, None) , ( DNA: human beta-globin yeast artificial chromosome transgene, None) , ( protein: EKLF, None) , ( DNA: human gamma-globin gene, None) , ( protein: EKLF, None) 