7765
In these transfected CL-01 cells , CD40: CD40L engagement and exposure to IL-4 synergistically induced gamma 3 ECS-dependent luciferase reporter gene activation .
 ( protein: CD40L, None) , ( DNA: luciferase reporter gene, None) , ( protein: IL-4, None) , ( cell line: CL-01 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: CD40L, None) , ( DNA: luciferase reporter gene, None) , ( protein: IL-4, None) , ( cell line: CL-01 cells, None) 