13891
The observation that IL-4 can differentially regulate the expression of TGF-alpha and TGF-beta1 suggests that IL-4 may serve as a physiologic molecular switch of TGF expression by the infiltrating eosinophils in wound healing and carcinogenesis .
 ( protein: TGF-beta1, None) , ( cell type: eosinophils, None) , ( protein: IL-4, None) , ( protein: TGF-alpha, None) , ( protein: TGF, None) , ( protein: IL-4, 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: TGF-beta1, None) , ( cell type: eosinophils, None) , ( protein: IL-4, None) , ( protein: TGF-alpha, None) , ( protein: TGF, None) , ( protein: IL-4, None) 