13649
These results identify a potential role for IL-7 signaling pathways in transformation by v-Abl while demonstrating that a combination of IL-4 and IL-7 signaling cannot substitute for an active v-Abl kinase in transformed pre-B cells .
 ( protein: IL-4, None) , ( protein: v-Abl, None) , ( protein: IL-7, None) , ( protein: v-Abl, None) , ( protein: IL-7, None) , ( cell type: pre-B cells, None) , ( cell type: transformed pre-B cells, 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-4, None) , ( protein: v-Abl, None) , ( protein: IL-7, None) , ( protein: v-Abl, None) , ( protein: IL-7, None) , ( cell type: pre-B cells, None) , ( cell type: transformed pre-B cells, None) 