7055
HS I directs high-level expression of reporter GATA-1/lacZ genes to primitive and definitive erythroid cells and megakaryocytes in transgenic mice .
 ( cell type: megakaryocytes, None) , ( DNA: HS I, None) , ( DNA: GATA-1/lacZ genes, 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 type: megakaryocytes, None) , ( DNA: HS I, None) , ( DNA: GATA-1/lacZ genes, None) 