1478
Erythropoietin ( Epo ), granulocyte/macrophage colony stimulating factor ( GM-CSF ), and interleukin 3 ( IL-3 ) promoted the growth of NS-Meg cells .
 ( protein: Epo, None) , ( protein: GM-CSF, None) , ( protein: interleukin 3, None) , ( protein: Erythropoietin, None) , ( cell line: NS-Meg cells, None) , ( protein: IL-3, None) , ( protein: granulocyte/macrophage colony stimulating factor, 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: Epo, None) , ( protein: GM-CSF, None) , ( protein: interleukin 3, None) , ( protein: Erythropoietin, None) , ( cell line: NS-Meg cells, None) , ( protein: IL-3, None) , ( protein: granulocyte/macrophage colony stimulating factor, None) 