6227
In the absence of functional IL-13R alpha1 and gamma(c) , IL-13 must signal through an alternative receptor complex on MDMac .
 ( protein: IL-13R alpha1, None) , ( cell line: MDMac, None) , ( protein: receptor complex, None) , ( protein: gamma(c), None) , ( protein: IL-13, 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-13R alpha1, None) , ( cell line: MDMac, None) , ( protein: receptor complex, None) , ( protein: gamma(c), None) , ( protein: IL-13, None) 