10450
The combination of the immune costimulatory molecule B7.1 and IL-12 has been shown to be synergistic for T cell activation .
 ( protein: B7.1, None) , ( protein: IL-12, None) , ( protein: immune costimulatory molecule, 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: B7.1, None) , ( protein: IL-12, None) , ( protein: immune costimulatory molecule, None) 