13587
Here we demonstrate loss of interleukin 6 (IL-6) receptor and IL-6-responsive colony-forming units ( CFU-IL6 ) in C/EBPalpha -/- mice .
 ( protein: C/EBPalpha, None) , ( protein: IL-6-responsive colony-forming units, None) , ( protein: interleukin 6 (IL-6) receptor, None) , ( protein: interleukin 6, None) , ( protein: CFU-IL6, 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: C/EBPalpha, None) , ( protein: IL-6-responsive colony-forming units, None) , ( protein: interleukin 6 (IL-6) receptor, None) , ( protein: interleukin 6, None) , ( protein: CFU-IL6, None) 