14677
We now report that EC costimulation causes increased levels of IL-2 mRNA as a result of increased IL-2 transcription in PBL .
 ( cell type: PBL, None) , ( protein: IL-2, None) , ( RNA: IL-2 mRNA, None) , ( cell type: EC, 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:
 ( cell type: PBL, None) , ( protein: IL-2, None) , ( RNA: IL-2 mRNA, None) , ( cell type: EC, None) 