13585
Previously, we demonstrated that granulocyte colony-stimulating factor ( G-CSF ) receptor mRNA was undetectable and granulocyte maturation blocked in CCAAT enhancer binding protein alpha ( C/EBPalpha )-deficient mice .
 ( protein: granulocyte colony-stimulating factor, None) , ( RNA: granulocyte colony-stimulating factor ( G-CSF ) receptor mRNA, None) , ( protein: G-CSF, None) , ( protein: CCAAT enhancer binding protein alpha, None) , ( protein: CCAAT enhancer binding protein, None) , ( protein: C/EBPalpha, 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: granulocyte colony-stimulating factor, None) , ( RNA: granulocyte colony-stimulating factor ( G-CSF ) receptor mRNA, None) , ( protein: G-CSF, None) , ( protein: CCAAT enhancer binding protein alpha, None) , ( protein: CCAAT enhancer binding protein, None) , ( protein: C/EBPalpha, None) 