1491
Furthermore, CD28 -dependent elevation of c-jun mRNA does not appear to be mediated at the level of mRNA stability .
 ( protein: CD28, None) , ( DNA: c-jun, None) , ( RNA: c-jun mRNA, 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: CD28, None) , ( DNA: c-jun, None) , ( RNA: c-jun mRNA, None) 