13588
The observed failure of granulopoiesis could be rescued by the addition of soluble IL-6 receptor and IL-6 or by retroviral transduction of G-CSF receptors , demonstrating that loss of both of these receptors contributes to the absolute block in granulocyte maturation observed in C/EBPalpha -deficient hematopoietic cells .
 ( protein: IL-6, None) , ( cell type: C/EBPalpha -deficient hematopoietic cells, None) , ( protein: G-CSF receptors, None) , ( protein: C/EBPalpha, None) , ( protein: IL-6, None) , ( protein: IL-6 receptor, 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: IL-6, None) , ( cell type: C/EBPalpha -deficient hematopoietic cells, None) , ( protein: G-CSF receptors, None) , ( protein: C/EBPalpha, None) , ( protein: IL-6, None) , ( protein: IL-6 receptor, None) 